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"17.10.2016 12:54:44" Timeline Photos The word "archive" might invoke thoughts of dusty, crumbling papers and ancient artifacts. That might be true of some, but the Chandra Data Archive is a sophisticated, digital system that houses the observations of this amazing X-ray telescope. A new
"12.10.2016 14:33:55" chandra.si.edu Chandra Press Room :: Proxima Centauri Might Be More Sunlike Than We Thought :: 11 October 16 Cambridge, MA - In August astronomers announced that the nearby star Proxima Centauri hosts an Earth-sized planet (called Proxima b) in its habitable zone. At first glance, Proxima Centauri seems nothing like our Sun. It's a small, cool, red dwarf star Proxima Centauri is a star just a stone's throw away in astronomical terms -- a bit over 4 light years from Earth. Astronomers are learning more about this stellar neighbor using a host of telescopes including Chandra. Here's the latest:
"22.09.2016 20:01:20" news.wgbh.org How Cambridge Scientists Discovered X-Rays on Pluto (And 50,000 Other Things in Space) Pluto is emitting X-rays according to a new paper published in the journal Icarus. Scientists believe that is evidence that the former planet's tenuous atmosphere – one few expected even existed a few years ago – is escaping into space. And while what was Great story on Chandra and how it connects Cambridge to Pluto -- one X-ray photon at a time.
"14.09.2016 18:38:10" chandra.si.edu Chandra Press Room :: X-ray Detection Sheds New Light on Pluto :: 14 September 16 Scientists using NASA's Chandra X-ray Observatory have made the first detections of X-rays from Pluto. These observations offer new insight into the space environment surrounding the largest and best-known object in the solar system's outermost regions. What's that you say? X-rays from Pluto? Actually, yes.
"08.09.2016 19:22:37" chandra.si.edu Chandra :: Photo Album :: RCW 103 :: September 8, 2016 Using NASA's Chandra X-ray Observatory and other X-ray observatories, astronomers have found evidence for what is likely one of the most extreme pulsars, or rotating neutron stars, ever detected. The source exhibits properties of a highly magnetized Most neutron stars spin around once every 10 seconds or so. The one at the center of the RCW 103 supernova rotates once every 6.5 hours, making it the slowest spinning neutron star we know about. Find about more about this unusual object in our latest
"08.09.2016 13:08:30" youtube.com High Energy Vision: The Chandra X-ray Observatory It has been only forty years since humanity has known the existence of the strange and dynamic x-ray universe, an invisible universe of million degree gas, i... To make the celebration of the 50th anniversary of Star Trek, why not combine it with your favorite X-ray telescope? This video comes from shortly after Chandra's launch and features none other than Nichelle Nicols, the original Uhuru, of course, as the
"01.09.2016 18:09:03" wsj.com NASA Discovers Record-Breaking Galaxy Cluster More than 11 billion light years from Earth, NASA scientists have discovered what they describe as the most distant galaxy cluster ever seen. WSJ's Monika Auger reports. Photo: NASA/CXC/CEA/T. Wang ICYMI, the Wall Street Journal now does excellent short videos on various news topics. This includes a recent video on Chandra's discovery of the most distant galaxy cluster. Take a
"30.08.2016 15:56:07" Read more about this exciting result from the first author, Tao Wang, in his blog post: "Hunting for the Most Distant Galaxy Cluster".
"30.08.2016 15:55:02" chandra.si.edu Chandra Press Room :: Record-breaking Galaxy Cluster Discovered :: 30 August 16 A new record for the most distant galaxy cluster has been set using NASA's Chandra X-ray Observatory and other telescopes. This galaxy cluster may have been caught right after birth, a brief, but important stage of evolution never seen before. The most distant galaxy cluster has been found using Chandra and other telescopes! This object also shows some unusual behavior and may represent a short-lived, but important phase of galaxy cluster evolution.
"17.08.2016 18:09:06" Timeline Photos Do you know what a "historical supernova" is? Find out with our latest image release: http://chandra.si.edu/photo/2016/g11/
"15.08.2016 13:11:26" chandra.harvard.edu AstrOlympics We often note when something is moving faster or slower than something else. Speed is often used interchangeably with velocity, but they are in fact not the same. Speed measures distance over time, and velocity does this and adds direction. Therefore, two Once again we are in awe of how fast some humans can go.
"12.08.2016 14:30:16" Timeline Photos These Olympics demonstrate the epitome of speed -- in the pool, across the floor, and so many more places.
"11.08.2016 14:10:35" Timeline Photos
"10.08.2016 19:17:30" chandra.si.edu Chandra X-ray Observatory Do you remember Hanny's Voorwerp, the unusual object discovered by a Dutch school teacher as part of the Galaxy Zoo citizen science project? Professional astronomers have turned their attention to this object too. Find out what Chandra has learned about
"10.08.2016 12:59:31" hte.si.edu Chandra X-ray Observatory Find out more about bow waves created by Michael Phelps, Katie Ledecky and other swimmers in our "Here, There, and Everywhere" project.
"10.08.2016 12:54:17" Timeline Photos Congratulations to the US women's gymnastics team for a truly impressive performance and winning the gold medal1
"09.08.2016 17:02:04" Timeline Photos
"09.08.2016 14:27:01" Timeline Photos The athletes at the Olympic Games in Rio already know all about the pressure to perform. Find out more about pressure in science by watching this video from our AstrOlympics project.
"05.08.2016 17:26:46" Timeline Photos The Olympic Games officially kick off in Rio tonight. Celebrate this exciting day by exploring our AstrOlympics project!
"27.07.2016 17:58:20" chandra.si.edu Chandra Press Room :: Astronomers Gain New Insight into Magnetic Field of Sun and its Kin :: 27 July 16 Astronomers have used data from NASA's Chandra X-ray Observatory to make a discovery that may have profound implications for understanding how the magnetic field in the Sun and stars like it are generated. The Sun is our nearest -- and most important -- star to Earth. Scientists know that magnetic fields are responsible for much of the solar activity, including powerful storms that can erupt from its surface and produce auroras, knock out satellites, and
"26.07.2016 12:54:46" youtube.com How to Hold a Dead Star in Your Hand | Kimberly Arcand | TEDxProvidence A comprehensive summary of cutting edge science as we explore the galaxy. Kimberly Kowal Arcand is the Visualization Lead for NASA's Chandra X-ray Observator... Have you ever wondered how to hold a dead star in your hand? Chandra's Kim Arcand tells you how in her talk at TedX Providence. Take a look!
"12.07.2016 15:15:31" chandra.harvard.edu AstrOlympics Many of us are also in awe of what the Universe has to offer. Astronomers have explored the heavens with their telescopes and come up with findings that are so fantastic it can be hard to believe they're real. Watch our latest AstrOlympics podcast on distance!
"08.07.2016 14:53:09" huffingtonpost.com “We Got This” Last month, I was honored to attend an extraordinary event: the United State of Women Summit convened by the White House. Since the word “summit” means a... Chandra Visualization Lead Kim Arcand blogged about her experience representing Chandra at the recent The United State of Women Summit. Read more at https://t.co/znEHE5caQz
"27.06.2016 16:02:37" Timeline Photos What if there is a bunch (as in thousands or even millions) of black holes in our Milky Way that we didn't know about? Turns out -- that might be the case. Learn more from our latest result: "Clandestine Black Hole May Represent New
"23.06.2016 13:28:22" This summer, we are rolling out an exciting new project called "AstrOlympics". As you might have guessed from the name, it's a project that will compare some of the physical feats of the Olympic Games with the amazing science we find in the cosmos. We'll
"15.06.2016 18:04:48" washingtonpost.com LIGO scientists announce their second detection of gravitational waves The second signal was weaker than the first, but the pair of events suggest these detections may become common place. Congratulations to the LIGO team for the 2nd detection of gravitational waves!
"13.06.2016 16:25:20" Timeline Photos How effective are young stars that are smaller and fainter at making planets? A new study combining data from Chandra and other telescopes tells us more about this important question and what impact it could have on looking for planets outside our Solar
"10.06.2016 18:13:52" huffingtonpost.com Coding (and Coloring) the Universe When people ask me what I do for work, I often say that I'm a storyteller. It's not that I stand on a stage with a microphone and narrate long tales to a... We are very excited that Chandra's Visualization Lead, Kim Arcand, will be attending next week's United State of Women event at the White House. In preparation, Kim has written a blog post on some of her work using Chandra images to encourage women and
"09.06.2016 15:09:37" science.nasa.gov 2016 Senior Review of Operating Missions - NASA Science Discovering the origin, structure, evolution and destiny of the Universe, and searching for Earth-like planets. Every couple of years, NASA conducts an extensive process called "Senior Review" to look at how certain missions are performing. The Senior Review process involves a lot of work -- both on the part of the reviewers and those who need to prepare material
"25.05.2016 17:59:27" discovermagazine.com The 10 Weirdest Objects in the Universe | DiscoverMagazine.com In a place as big as the universe, there's bound to be some weird stuff. Here we present the biggest, coldest, hottest, oldest, deadliest, loneliest, darkest, brightest, and more superlatives that the cosmos has to offer, ranging from right next door to Three of Discover Magazine's "10 Weirdest Objects in the Universe" involve Chandra. Sounds about right!
"24.05.2016 18:18:59" chandra.harvard.edu Chandra Press Room :: NASA Telescopes Find Clues For How Giant Black Holes Formed So Quickly ::... Using data from NASA's Great Observatories, astronomers have found the best evidence yet for cosmic seeds in the early universe that should grow into supermassive black holes. NASA's Great Observatories (Chandra, Hubble, and Spitzer) have joined forces to produce a very exciting result about the birth of supermassive black holes in the early Universe.
"18.05.2016 17:41:41" slate.com Watch the Expansion of Debris Hurled Into Space by a Supernova Observations spanning 15 years reveal the physical expansion of debris hurled into space by a supernova. Get some great insight on our latest Tycho movie from The Bad Astronomer himself over on slate.com:
"17.05.2016 15:45:53" forbes.com How To Hold A Dead Star In Your Hand By reconstructing the various layers of a supernova explosion, NASA scientists can 3D print -- and literally hold -- the remains of a cosmic catastrophe Chandra's Kim Arcand has a new post on the "Starts with a Bang" blog at Forbes.com: "How to Hold a Dead Star in Your Hand". Take a look!
"16.05.2016 16:17:07" livestream.com Communicating Astronomy With the Public - CAP 2016 - by Parque Explora Watch Parque Explora's Communicating Astronomy With the Public - CAP 2016 - on Livestream.com. From 16 to 20 May 2016, many of the world's top astronomy communicators will meet in Medellin, Colombia, to exchange views and experiences during the five-day Interested in how astronomy is shared with non-experts? The Communicating Astronomy with the Public conference is happening right in Medellin, Colombia. Watch, listen, and learn! #CAP2016
"12.05.2016 18:53:43" chandra.si.edu Chandra :: Photo Album :: Tycho's Supernova Remnant :: May 12, 2016 When the star that created this supernova remnant exploded in 1572, it was so bright that it was visible during the day. And though he wasn't the first or only person to observe this stellar spectacle, the Danish astronomer Tycho Brahe wrote a book about About 450 years ago, a star exploded and was witnessed by people here on Earth. Among them was the Danish astronomer, Tyco Brahe, who later wrote a book on the event and was ultimately honored with having the object named after him. Today, astronomers
"10.05.2016 13:12:06" astroart.cfa.harvard.edu Chandra X-ray Observatory Our Aesthetics & Astronomy project is unlike any other -- it studies how people perceive images from space and how different choices in making the image affect comprehension and enjoyment. (Learn more about it here: http://astroart.cfa.harvard.edu/)
"04.05.2016 14:47:41" Timeline Photos There seems to be a heavy obsession with the Star Wars franchise and the concept of a giant beam of material blasting something else. Guess what? Chandra found one in real life. Take a look at our 'death star galaxy' story from 2007.
"02.05.2016 15:09:48" eso.org Three Potentially Habitable Worlds Found Around Nearby Ultracool Dwarf Star - Currently the best... Astronomers using the TRAPPIST telescope at ESO's La Silla Observatory have discovered three planets orbiting an ultracool dwarf star just 40 light-years from Earth. These worlds have sizes and temperatures similar to those of Venus and Earth and are the New planetary system with three habitable worlds just 40 light years away! This will be an exciting place for astronomers to observe.
"28.04.2016 16:41:43" chandra.si.edu Chandra :: Photo Album :: Probing Dark Energy with Clusters :: April 28, 2016 Researchers used a novel technique that takes advantage of the observation that the outer reaches of galaxy clusters, the largest structures in the universe held together by gravity, show similarity in their X-ray emission profiles and sizes. That is, This might sound like the start of a bad joke, but it's not: how are galaxy cluster similar to Russian dolls? The answer, believe it or not, tells us something about the nature of dark energy, one of the biggest mysteries in
"22.04.2016 18:30:33" Timeline Photos Our final comparison for Earth Day 2016: the acacia tree stands alone where animals travel to take advantage of its leaves and shade. The Perseus Cluster also gives back to its environment, with its central supermassive black hole booming out the deepest
"22.04.2016 17:51:54" Timeline Photos The scarlet ibis makes its home in the humid zones of Venezuela, seen here on the left. The other side shows the Rosette Nebula where new stars are actively forming.
"22.04.2016 16:44:21" Timeline Photos The Nambia Desert in Africa is believed to the oldest on Earth, having been formed some 100 million years ago. By comparison, the supernova remnant Puppis A is a baby. Astronomers think the remnant was created when a star exploded in the Earth's sky about
"22.04.2016 16:25:31" Timeline Photos On the island of Mindanao in the southern Philippines, gold deposits are being mined. Refuse and sediments are being discharged into the rivers and oceans, as seen here, causing damage to the environment. The other image shows destruction of a different
"22.04.2016 15:14:05" Timeline Photos The Great Barrier Reef is the longest coral formation in the world (1,500 miles). Cassiopeia A is a supernova remnant that was 10 light years across (63 trillion miles) and 10,000 light years
"22.04.2016 15:03:31" Timeline Photos One third of the region of Monteregie in Quebec is covered with mixed forest including pines, spruces, cherry and birch trees. Contrast that view with Chandra's image of the G292.0+1.8 supernova remnant, where the different colors reveal large amounts of
"22.04.2016 15:02:30" Timeline Photos Happy Earth Day! To celebrate, we will be sharing our series called "From Earth to the Heavens" that compares the amazing aerial photos from Yann Arthus-Bertrand and the spectacular imagery from the Chandra X-ray Observatory and other telescopes. Please
"18.04.2016 15:36:22" chandra.si.edu Chandra :: Photo Album :: Comets ISON & PanSTARRS :: April 18, 2016 For millennia, people on Earth have watched comets in the sky. Many ancient cultures saw comets as the harbingers of doom, but today scientists know that comets are really frozen balls of dust, gas, and rock and may have been responsible for delivering Comets are usually associated with very cold things, and for good reason! They are icy bodies made up of gas and dust. But did you also know that comets can emit X-rays? Find out how in our latest story.
"06.04.2016 13:15:27" apod.nasa.gov APOD: 2016 April 6 - Auroras and the Magnetosphere of Jupiter A different astronomy and space science related image is featured each day, along with a brief explanation. Our Jupiter story is today's Astronomy Picture of the Day! (Cool illustration from JAXA!)
"05.04.2016 15:40:09" space.com Milky Way Mystery: Here's What Caused the Galaxy's Youngest Supernova A new model suggests that the Milky Way's youngest supernova occurred when two white dwarf stars slammed into one another. Space.com covered our recent result on what triggered the Milky Way's youngest supernova:
"31.03.2016 12:52:38" chandra.si.edu Chandra :: Photo Album :: G1.9+0.3 :: March 30, 2016 Scientists have used data from NASA's Chandra X-ray Observatory and the NSF's Jansky Very Large Array to determine the likely trigger for the most recent supernova in the Milky Way, as described in our latest press release. Our latest story reveals what triggered the most recent supernova explosion in our own Milky Way galaxy. Using X-ray data from Chandra and radio data from the Very Large Array, astronomers were able to study the supernova remnant called G1.9+0.3 and find
"30.03.2016 14:54:18" spaceflight101.com Chandra X-ray Observatory Some hope for Hitomi.
"28.03.2016 20:33:33" Keeping our fingers crossed for our fellow X-ray telescope, Hitomi ...
"28.03.2016 16:24:41" forbes.com Beyond Human Vision, Distant Galaxy Clusters Emit Spectacular Fireworks Telescopes like Hubble reveal optical details no human eye can see. But X-ray and radio observatories teach us even more than that. Our recent result on the Frontier Fields is the topic of this week's Mostly Mute Monday on Forbes.com!
"25.03.2016 17:03:55" nasa.gov NASA Announces Astronomy and Astrophysics Fellows for 2016 NASA has selected 36 fellows for its prestigious Einstein, Hubble, and Sagan Fellowships. Every year, the Chandra X-ray Center awards the Einstein Fellowships to a new crop of deserving young scientists. This program provides support to these early career astrophysicists to pursue their research at an institution of their choosing for three
"24.03.2016 20:02:42" Kimberly Arcand & Megan Watzke Talking astronomy & STEM careers today Chandra's Visualization Lead, Kim Arcand, delivered the keynote address at the GRRL Tech conference in Rhode Island today. Way to go, Kim!
"23.03.2016 13:30:07" chandra.si.edu Chandra :: Photo Album :: Jupiter :: March 22, 2016 Solar storms are triggering X-ray auroras on Jupiter that are about eight times brighter than normal over a large area of the planet and hundreds of times more energetic than Earth's 'northern lights,' according to a new study using data from NASA's Did you know that Jupiter has 'northern lights' too? A new Chandra study gives insight into how they are formed.
"14.03.2016 13:25:59" It's Albert Einstein's birthday (born March 14, 1879), which would have made him 137 years old today. *And* it's Pi Day (3.14). Go out and celebrate some physics and math. Or just give a virtual high five to Einstein for the recent gravitational wave
"10.03.2016 18:54:22" Timeline Photos Ever wonder what happens when you combine the abilities of some of modern astronomy's greatest telescopes? Our latest story is an excellent example with joint observations of the same objects from Chandra, Hubble, the Very Large Array, and
"08.03.2016 14:05:52" chandra.harvard.edu Women in the High Energy Universe | ChandraBlog | Fresh Chandra News We welcome Alicia Goldstein, who was an intern at the Chandra X-ray Center this past summer, as our guest blogger. Ms. Goldstein, originally from Ellicott City, MD, is currently a senior at the University of Maryland, Baltimore County where she majors in Happy International Women's Day! To celebrate, visit our blog series on women who work on the Chandra X-ray Observatory called "Women in the High-Energy Universe": http://chandra.harvard.edu/blog/women
"01.03.2016 14:06:06" chandra.harvard.edu Chandra :: Photo Album :: Cygnus X-1 :: November 17, 2011 On the left, an optical image from the Digitized Sky Survey shows Cygnus X-1, outlined in a red box. Cygnus X-1 is located near large active regions of star formation in the Milky Way, as seen in this image that spans some 700 light years across. An Scientists can infer many things that are happening around distant exotic objects such as a stellar-mass black holes in orbit with a star by the data we get from telescopes such as Chandra. But by combining that information with an artist's skills, we can
"01.03.2016 14:03:39" Timeline Photos Today, the internet is a buzz with the #sciart hashtag. It's an opportunity to explore the intersection of the two very important fields of science and art. At the Chandra X-ray Center, we certainly believe in this fusion of disciplines and that it helps
"24.02.2016 14:32:59" vox.com Most images of black holes are illustrations. Here’s what our telescopes actually capture. Supermassive black holes are incredibly tiny. So small that we’ve never actually seen one. Are you confused about whether astronomers have actually *seen* a black hole yet? This Vox article tackles the subject. Chandra's Press Scientist, Peter Edmonds, gives some excellent explanations and there are a bunch of Chandra images to
"23.02.2016 15:52:01" chandra.harvard.edu Chandra X-ray Observatory Happy 29th Birthday to SN 1987a! On the night of February 23, 1987 (or 24th depending where on the world you were), astronomers saw the signals of the explosion of a massive star in the Large Magellanic Cloud. This event became known as SN 1987a (the name
"19.02.2016 14:10:05" chandra.harvard.edu New X-ray Observatory Comes Online | ChandraBlog | Fresh Chandra News On February 17th, the Japanese Aerospace Exploration Agency (JAXA) launched a rocket into space with the X-ray Astronomy Satellite, also known as ASTRO-H, onboard. Did you know that a new X-ray telescope launched earlier this week? The Japanese space agency, known as JAXA, successfully sent the observatory that was called ASTRO-H into orbit. Once it was found to be working properly, it was renamed Hitomi, which
"18.02.2016 17:03:49" mashable.com Glow of the Big Bang illuminates rare X-ray emitting black hole jet The light from the Big Bang itself is helping scientists study a black hole in deep space. Mashable has an article about the jet from the very distant black hole announced earlier this week: "Ancient light from the dawn of the universe has illuminated a 300,000 light-year-long jet shooting from a supermassive black
"17.02.2016 21:28:51" global.jaxa.jp JAXA | X-ray Astronomy Satellite (ASTRO-H) Solar Array Paddles Deployment and Name Decided Get information on the X-ray Astronomy Satellite (ASTRO-H) Solar Array Paddles Deployment and Name Decided. The Japan Aerospace Exploration Agency (JAXA) performs various activities related to aerospace as an organization, from basic research in the We are excited to welcome another observatory to the X-ray astronomy fleet. The telescope, previously known as ASTRO-H, is now called Hitomi (meaning "eye" in Japanese). ASTRO-H is a complementary mission to Chandra. We look forward to many discoveries
"16.02.2016 21:03:00" cbc.ca 'Zombie star' scientist wins Canada's top science prize An astrophysicist who studies exotic "zombie stars" has become the first woman to win Canada's top science prize. Congratulations to Victoria Kaspi, frequent Chandra observer, for winning Canada's top science prize!
"16.02.2016 20:09:47" Timeline Photos You can learn more about this fascinating discovery in the words of the principal scientist of this study, Aurora Simionescu. Read her blog post about this result here: http://chandra.harvard.edu/blog/node/589
"16.02.2016 20:07:48" chandra.si.edu Chandra :: Photo Album :: B3 0727+409 :: February 16, 2016 A jet from a very distant black hole being illuminated by the leftover glow from the Big Bangcosmic microwavelatest press release Astronomers using Chandra have discovered a jet from a black hole that is about 11 billion light years away. This means the light from this jet was emitted just a few billion years after the Big Bang. The residual light from the Big Bang, known as the
"11.02.2016 18:19:14" chandra.harvard.edu Chandra X-ray Observatory EXCITING NEWS.
It's a fitting coincidence. Just a few months after celebrating the 100th anniversary of Einstein's theory of General Relativity (GR), we have just heard that gravitational waves, a key prediction of GR, have been directly detected for
"11.02.2016 16:02:54" Congrats to everyone involved with the LIGO project for the amazing discovery of gravitational waves!
"10.02.2016 15:41:35" chandra.harvard.edu Chandra :: Resources :: Q&A: Black Holes There's going to be a big announcement about gravitational waves tomorrow from LIGO. Here's a Q&A about these elusive waves from 2012: http://chandra.harvard.edu/resources/faq/black_hole/bhole-45.html
"04.02.2016 19:23:34" chandra.si.edu Poetry Inspired by Chandra Discoveries | ChandraBlog | Fresh Chandra News Scientific discoveries can provide inspiration for music, art, literature and poetry. As an example of the latter, over several years we have hosted the results of poetry competitions run by Jonathan Taylor, a lecturer in Creative Writing at The Univ A poem inspired by the Chandra X-ray Observatory and its discoveries wins a student competition. Read "Stellar Homicide" here: http://chandra.si.edu/blog/node/586
"04.02.2016 17:33:12" storify.com Light: Beyond the Bulb (with images, tweets) · kimberlykowal A public science project for the UN's International Year of Light and Light-Based Technologies (2015) For a bunch of "Light: Beyond the Bulb" photos, check out the Storify version here:
"04.02.2016 16:21:16" Timeline Photos Chicago O'Hare International Airport
"04.02.2016 16:19:28" lightexhibit.org Chandra X-ray Observatory Shanghai Nanhui Senior High School
May 20-December 30, 2015
"04.02.2016 16:16:03" lightexhibit.org Chandra X-ray Observatory University of Puerto Rico (Main Library)
April 17, 2015
Puerto Rico, San Juan
"04.02.2016 16:07:42" The closing ceremonies for the International Year of Light start today! This year, Chandra was a major participant by creating the "Light: Beyond the Bulb" (lightexhibit.org) series of exhibits that have appeared around the world. Here are some pics
"03.02.2016 21:03:12" chandra.si.edu Chandra :: Resources :: Q&A: X-Ray Astronomy Question of the Day: Why do we need X-ray telescopes?
Find out the answer here: http://chandra.si.edu/resources/faq/x-ray/x-ray-1.html
"02.02.2016 16:23:49" Timeline Photos Just released: Chandra Sees a Blast from a Black Hole in a Galaxy Far, Far Away.
"01.02.2016 21:08:47" As we do every year on this day, we take a moment to salute the brave men and women that were lost aboard the Space Shuttle Columbia on February 1, 2003. The Chandra mission is forever indebted to the Columbia vehicle as it launched the observatory i
"01.02.2016 17:38:45" chandra.si.edu Chandra :: Photo Album :: Chandra Images in 4K JPG Format Download Chandra images suitable for 4K UHD (ultra high definition) format with a minimum resolution of 4096 pixels x 2160 and an aspect ration of 16:9. Want to see Chandra images in ultra high-definition? If so, your wish has come true.
"28.01.2016 16:53:23" chandra.si.edu Chandra X-ray Observatory Have you been thinking that 2016 has been missing something for you so far? If so, maybe it's your own Chandra calendar! Print your own 2016 Chandra calendar with spectacular images from the past year. Featured objects include supernova remnants, gal
"27.01.2016 20:48:12" Not that anyone asked us, but we're on Team Tyson in the whole shape of the world thing.
"26.01.2016 16:20:54" lightexhibit.org Light: Aurora Borealis Streams of particles with electric charge are continually leaving the Sun and traveling through the Solar System. As these particles approach the Earth, some of them are channeled by the planet's magnetic field toward the North and South poles where Light Picture of the Day: Aurora Borealis.
Streams of particles with electric charge are continually leaving the Sun and traveling through the Solar System. As these particles approach the Earth, some of them are channeled by the planet's magnetic fi
"25.01.2016 16:46:20" Timeline Photos Flashback of the Day! Abell 1758 is a system that shows the effect of a collision between two small galaxy clusters. Abell 1758 is located about 3.2 billion light years from Earth.
"21.01.2016 14:28:51" chandra.harvard.edu Chandra :: Resources :: Video Podcasts: The Incredible Two-Inch Universe Explore the universe by shrinking cosmic scale in 4 steps, zooming out from the realm of the Earth and Moon to the realm of the galaxies. You can use this 4-STEP SCALE MODEL to imagine some of the distances involved in NASA's explorations of the univ We don't have anything to say on whether there is or isn't another ("ninth") planet out there in our Solar System, but our "Two Inch Universe" activity can help you understand how far things in the Universe really are!
"20.01.2016 14:31:41" photostospace.com Carnival of Space No. 441 Carnival of Space No. 441 Jan 18 2016 Greetings on and all to the latest edition of carnival of Space. This week sees a great assortment of articles covering everything from rocket, to orbital space habitats to deep space. So grab your favorite bever This week's Carnival of Space features, among other great posts, our burping black hole and massive galaxy cluster results.
"19.01.2016 15:18:30" chandra.si.edu Chandra :: Photo Album :: Abell 3627 :: January 21, 2010 Two spectacular tails of X-ray emission have been seen using the Chandra X-ray Observatory trailing behind a galaxy. A composite image of the galaxy cluster Abell 3627 shows X-rays from Chandra in blue, optical emission in yellow and emission from hy Flashback of the Day: Abell 3627 "Two Tails to Tell"
In 2010, astronomers announced the discovery of two spectacular tails of X-ray emission found behind a galaxy plunging through the galaxy cluster Abell 3627.
"12.01.2016 17:55:36" chandra.harvard.edu Chandra :: Resources :: Podcasts :: Transcript :: A Tour of IDCS J1426.5+3508 Our video podcast on IDCS 1426 (the distant massive cluster) is now up!
"12.01.2016 15:34:10" wsj.com Biggest Galaxy Cluster in Early Universe Found A group of U.S. astronomers, including those from the University of Missouri and MIT, used data from three of NASA's Great Observatories to study the most massive cluster ever found in the early universe. WSJ's Monika Auger reports. Photo: NASA/CXC/U Our result on a distant massive galaxy cluster (along with Hubble, Spitzer, and Keck) was covered nicely in a video by the Wall Street Journal. Take a look!
"11.01.2016 16:00:35" chandra.harvard.edu Chandra :: Resources :: Podcasts :: Transcript :: A Tour of NGC 5195 Our result on NGC 5195 sparked articles in everything from The Economist to NPR last week. Now you can watch the podcast and find out what it's all about.
"11.01.2016 13:48:45" twitter.com realscientists (@realscientists) | Twitter The latest Tweets from realscientists (@realscientists). Real science from real scientists, writers, communicators, artists & clinicians. This week: Data Scientist | Kimberly Kowal Arcand| @kimberlykowal. Everywhere Chandra's visualization lead, Kim Arcand, is the curator of Real Scientists this week. Follow the action on Twitter: https://twitter.com/realscientists
"07.01.2016 19:24:20" Chandra X-ray Observatory
"07.01.2016 19:23:06" chandra.si.edu Chandra X-ray Observatory NASA's Great Observatories Weigh Massive Young Galaxy Cluster:
An extremely distant massive cluster, IDCS J1426.5+3508, has been studied in great detail by three of NASA's Great Observatories. This image o
"06.01.2016 17:49:59" cnn.com Chandra X-ray Observatory Our burping black hole story was picked up today by CNN:
"06.01.2016 14:56:53" colorado.edu Galactic merger reveals an unusual star-deprived black hole An unusually star-deprived black hole at the site of two merged galaxies could provide new insight into black hole evolution and behavior. More Chandra news from this week's AAS meeting: a black hole "biggest loser". In a season of post-holiday gym memberships, an unusually star-deprived black hole at the site of two merged galaxies is showing that these massive gravitational voids can
"05.01.2016 16:13:48" chandra.si.edu Chandra Press Room :: NASA's Chandra Finds Supermassive Black Hole Burping Nearby :: 05 January 16 Evidence for powerful blasts produced by a giant black hole has been discovered using NASA’s Chandra X-ray Observatory. This is one of the nearest supermassive black holes to Earth that is currently undergoing such violent outbursts. New result! Just announced the AAS meeting: Chandra finds supermassive black hole burping nearby. This has implications for how giant black holes influence the galaxies they live in.
"05.01.2016 15:33:23" Timeline Photos NASA - National Aeronautics and Space Administration
One of the nearest supermassive black holes to Earth with active powerful outbursts has been discovered.
Such outbursts are part of the "feedback" process that is important to the evolution of t
"31.12.2015 21:08:11" huffingtonpost.com Kimberly Arcand & Megan Watzke We ♥ X-rays! Read about them and the other types of light in this piece commemorating the end of the International Year of Light 2015. http://www.huffingtonpost.com/kimberly-k-arcand/8-reasons-we-should-care-_b_8889262.html
"31.12.2015 14:30:17" chandra.harvard.edu Chandra X-ray Observatory Print your own free 2016 Chandra calendar with some of our most recent and spectacular images! Available as the whole or downloadable month-by-month.
"31.12.2015 14:12:23" space.com Mysterious Pulsar and Jellyfish Nebula Share Explosive Birth (Photo) An explosion in space may have created not only a brilliant nebula but also a rapidly spinning neutron star, according to new data from NASA's Chandra X-ray Observatory. See space.com's write-up of our latest result on the Jellyfish Nebula (a.k.a. IC 443).
"29.12.2015 15:03:02" Timeline Photos Flashback of the Day: 4C+29.30
A giant black hole in the center of the galaxy 4C+29.30 is generating two powerful jets of particles. By combining X-rays (blue), optical (gold), and radio (pink) data, astronomers get a full picture of what is happenin
"22.12.2015 14:55:11" chandra.si.edu Chandra Press Room :: Chandra Finds Remarkable Galactic Ribbon Unfurled :: 21 Devember 15 An extraordinary ribbon of hot gas trailing behind a galaxy like a tail has been discovered using data from NASA's Chandra X-ray Observatory. This ribbon, or X-ray tail, is likely due to gas stripped from the galaxy as it moves through a vast cloud o If you are still looking for something to wrap your presents with, take a look at this gigantic galactic ribbon that Chandra discovered. Of course, you'll need a present big enough to need a ribbon that's at least 250,000 light years long. Plus you'l
"17.12.2015 14:12:32" spacescoop.org Space Scoop We are lucky to be friends and partners with the great people who do "Space Scoop," a project that brings the latest news from the cosmos to children around the world. You'll find lots of Chandra stories there. Take a look at their excellent new webs
"16.12.2015 16:09:02" amazon.com More Passion for Science: Journeys into the Unknown Who invented the infographic? Or the social network? Or radar reflecting chaff? The answers might surprise you! More Passion for Science: Journeys into the Unknown tells the stories of some little-known scientists and pioneers, and re-examines the le You can find a chapter on two of the astronauts that helped launched Chandra into space aboard STS-93, Cady Catherine Coleman and Eileen Collins, in "More Passion for Science: Journeys into the Unknown". This non-profit e-book is now available on Ama
"16.12.2015 15:27:16" chandra.harvard.edu Chandra :: Photo Album :: DEM L50 :: January 28, 2013 This composite image shows the superbubble DEM L50 (a.k.a. N186) located in the Large Magellanic Cloud about 160,000 light years from Earth. Superbubbles are found in regions where massive stars have formed in the last few million years. The massive Flashback of the Day: Stellar Effervescence on Display
DEM L50 is a so-called superbubble located in our neighboring galaxy, the Large Magellanic Cloud. Superbubbles are created by winds from massive stars and shock waves produced when stars explode
"15.12.2015 19:21:58" chandra.harvard.edu Chandra :: Resources :: Podcasts :: Transcript :: A Tour of IC 443 Watch our latest podcast on the Jellyfish Nebula!
"14.12.2015 13:51:31" stopthinkscience.com Episode 024 – NASA’s Chandra X-ray Observatory, with Megan Watzke | Stop. Think. Science! We really hope you enjoy this one! We had a chance to talk with Megan Watzke, who is the Press Officer for the Chandra X-ray Observatory. Want to hear a discussion about Chandra? The podcast, Stop. Think. Science!, has a new episode featuring our favorite X-ray telescope.
"11.12.2015 19:53:04" lightexhibit.org Light: Lenticular Clouds In this photo, we can see a couple of light's qualities. First, the setting Sun is illuminating the lenticular clouds above in a reddish tone because red light from the Sun is scattered less than shorter wavelengths as it travels through the Earth's Light Picture of the Day: Lenticular Clouds Stromness Bay, South Georgia
In this photo, we can see a couple of light's qualities. First, the setting Sun is illuminating the lenticular clouds above in a reddish tone because red light from the Sun is s
"10.12.2015 22:09:16" chandra.si.edu Chandra :: Photo Album :: IC 443 :: December 10, 2015 The Jellyfish Nebula, also known by its official name IC 443, is the remnant of a supernova lying 5,000 light years from Earth. New Chandra observations show that the explosion that created the Jellyfish Nebula may have also formed a peculiar object What spawned the Jellyfish Nebula? Astronomers may have found the pulsar for generating this spectacular object.
"08.12.2015 16:19:00" twitter.com Kim Kowal Arcand on Twitter “Worked on images of exploding stars for #HourofCode with 2 classes in Holliston MA today. https://t.co/S5xLFky46o” Chandra's Kimberly Arcand is helping to spread the excellent work of #HourofCode today in Holliston, Mass.
Find out more about the project at http://chandra.si.edu/edu/pencilcode/
"07.12.2015 18:51:08" chandra.si.edu Chandra :: Photo Album :: Cosmic Look-Back Time The finite speed of light means that we must always be out of date, no matter how hard we strive to keep up with the times. Thus, the seemingly simple question - what is happening right now on the Sun? - cannot be answered by an observer on Earth, be Here's something that confuses a lot of people. What is "look back time"? As with a lot of things that have to do with the vastness of space, Einstein helps us come up with an answer.
"07.12.2015 14:18:50" nextbigfuture.com Next Big Future: Carnival of Space 234 Check out the latest Carnival of Space with entries about Pluto, "hairy" dark matter, the X-ray Universe and more!
"04.12.2015 14:24:35" chandra.harvard.edu Chandra :: Educational Materials :: Investigating Supernova Remnants :: Introduction and Background Glossary Term of the Day: Type II Supernova.
Explosive death of a star in which a massive stellar core rapidly implodes and then explodes, destroying the star. Chandra has observed many of these. Learn more at http://chandra.harvard.edu/edu/formal/sn
"02.12.2015 18:36:19" chandra.si.edu Chandra :: Photo Album :: Carina Nebula :: May 24, 2011 This large Chandra image shows the Carina Nebula, a star-forming region in the Sagittarius-Carina arm of the Milky Way a mere 7,500 light years from Earth. Chandra's sharp X-ray vision has detected over 14,000 stars in this region, revealed a diffuse Flashback of the Day: The Carina Nebula!
The Carina Nebula: a star-forming region in the Sagittarius-Carina arm of the Milky Way a mere 7,500 light years from Earth. Chandra's sharp X-ray vision has detected over 14,000 stars in this region, revealed
"02.12.2015 17:14:17" chandra.harvard.edu Chandra :: Educational Materials :: Recoloring the Universe for #HourOfCode with Pencil Code Science Olympiad Astronomy WebinarScience Olympiad is a national non-profit organization dedicated to improving the quality of K-12 science education, increasing interest in science for all students. Educators/Parents/Students:
Getting ready for #HourOfCode and #CSEdWeek next week? Use real NASA - National Aeronautics and Space Administration data of exploding stars and black holes for a unique #CS experience http://chandra.si.edu/edu/pencilcode
"30.11.2015 14:12:29" wired.com Space Photos of the Week: The Smiling Cheshire Cat Galaxy Space photos of the week, November 22–28. A cosmic smile for your (cyber) Monday morning in Wired's Space Photos of the Week:
"27.11.2015 16:27:10" chandra.harvard.edu Chandra :: Photo Album :: IGR J17091-3624 :: February 21, 2012 This artist's impression shows a binary system containing a stellar-mass black hole called IGR J17091-3624, or IGR J17091 for short. The strong gravity of the black hole, on the left, is pulling gas away from a companion star on the right. This gas f You might have heard about a little phenomenon called 'Black Friday'. But what's even better? How about #BlackHoleFriday?!
Imagine bracing for 20-million-mile-per-hour wind?
"27.11.2015 15:55:41" chandra.harvard.edu Chandra :: Photo Album :: Centaurus A :: January 09, 2008 A dramatic new Chandra image of the nearby galaxy Centaurus A provides one of the best views to date of the effects of an active supermassive black hole. Opposing jets of high-energy particles can be seen extending to the outer reaches of the galaxy, Chandra shows a supermassive #blackhole blowing giant X-ray bubbles at the heart of Centaurus A! #BlackHoleFriday
NASA - National Aeronautics and Space Administration
"27.11.2015 15:53:07" chandra.harvard.edu Chandra :: Photo Album :: IGR J17091-3624 :: February 21, 2012 This artist's impression shows a binary system containing a stellar-mass black hole called IGR J17091-3624, or IGR J17091 for short. The strong gravity of the black hole, on the left, is pulling gas away from a companion star on the right. This gas f Imagine bracing 20 million mile per hour winds for #BlackFriday shopping! #BlackHoleFriday
IGR J17091-3624: NASA'S Chandra Finds Fastest Wind From Stellar-Mass Black Hole
NASA - National Aeronautics and Space Administration
"27.11.2015 13:18:32" chandra.harvard.edu chandra.harvard.edu A black hole is a dense, compact object whose gravitational pull is so strong that—within a certain distance of it—nothing can escape, not even light. Black holes range in size from a few times the mass of the Sun to millions or even billions of time
"27.11.2015 13:16:29" Timeline Photos It's #BlackHoleFriday! We'll be adding to the NASA - National Aeronautics and Space Administration #blackhole party with posts from your favorite X-ray observatory. Celebrate great deals in free science learning with us! http://chandra.harvard.edu/l
"24.11.2015 19:04:19" forbes.com Ask Ethan: How Do Black Holes Make Such Bright Quasars? How do black holes, from which nothing can escape, wind up giving rise to the brightest objects in the Universe? Another fun article on black holes. This time from Ethan Siegel at Starts with a Bang on Forbes.com. Find out how these supposed giant vacuums actually give off tons of light!
"24.11.2015 16:11:14" nautil.us This Is Why It's Hard to Recognize a Black Hole - Facts So Romantic - Nautilus Black Beauty: The supermassive black hole at the center of this galaxy, around 11 million light years away toward the constellation… Kudos to Summer Ash on a very nice piece in Nautilus on black holes and why they are so tricky to understand. (We like the pick of Centaurus A with Chandra data to boot!)
"24.11.2015 15:44:07" lightexhibit.org Light: Hercules A Some galaxies are extremely bright in different wavelengths of light. This is because their centers contain a supermassive black hole that is pulling in matter at a prodigious rate. In visible light (colored red, green and blue, with bright galaxies Light: Beyond the Bulb -- Picture of the Day!
Hercules A: a galaxy with a supermassive black hole at its center consuming material at a furious pace (what astronomers call an "active galaxy".) Chandra detects a giant pool of hot gas around the galaxy
"23.11.2015 18:08:07" chandra.harvard.edu Find more information on Albert Einstein and how 100-year-old theory is being tested by scientists today using the Chandra X-ray Observatory. Chandra Press Scientist explores this topic in our latest blog post: http://chandra.harvard.edu/blog/node/58
"23.11.2015 16:57:04" chandra.harvard.edu Chandra :: Photo Album :: SDSS J103842.59+484917.7 :: November 23, 2015 One hundred years ago this month, Albert Einstein published his theory of general relativity, one of the most important scientific achievements in the last century. Here's our latest story involving Einstein and one effect his theory predicted: gravitational lensing. Happy centenary!
"23.11.2015 16:53:21" onforb.es Mostly Mute Monday: Dark Matter's Secrets Revealed By Colliding Galaxy Clusters The Universe's most elusive substance has yet to be detected in a laboratory here on Earth. But on the largest, most violent cosmic scales, the evidence is unmistakable. Great article at Forbes Science on colliding galaxies and dark matter with lots of Chandra images. Just in time for the 100th anniversary of Einstein's General Relativity!
"23.11.2015 15:29:38" Timeline Photos Flashback of the Day: Tycho's Supernova Remnant
This view of the object that Tycho Brahe spotted over 400 years ago was released as part of a quartet to celebrate Chandra's 15 years in space.
"19.11.2015 18:45:16" chandra.si.edu Chandra :: Resources :: Q&A: Chandra Mission Question of the Day:
What problems does Chandra face during its orbit? (Hint: it's the same nemesis of cell phone reception and satellite TV disruptions). Answer: http://chandra.si.edu/resources/faq/chandra/chandra-26.html
"19.11.2015 15:19:10" chandra.harvard.edu Flashback of the Day: Centaurus A
"A New Look at an Old Friend"
"19.11.2015 14:21:39" lightexhibit.org Earth Lights From ISS While moving at 17,000 miles per hour at an altitude of 240 miles above the Earth's surface on the International Space Station, NASA astronaut Don Petit was able to capture the lights from our planet in a unique way. His time-lapse photographs—taken Light: Beyond the Bulb: Picture of the Day!
Earth Lights from the International Space Station (ISS)
While moving at 17,000 miles per hour at an altitude of 240 miles above the Earth's surface on the International Space Station, NASA astronaut Don Pet
"18.11.2015 15:57:11" newscientist.com Local supernova 2 million years ago solves cosmic ray puzzle We're still feeling the glow of a 2-million-year-old supernova in our cosmic neighbourhood Cool supernova story on New Scientist that features Chandra's G292.0+1.8 image from our 15th anniversary release.
"18.11.2015 15:26:35" lightexhibit.org Light: Milky Way Over Baobabs As a so-called spiral galaxy, our Milky Way galaxy contains majestic arms of stars, dust, and gas that emanate from a central bulge area. Our Solar System resides in one of the outer arms of the Milky Way. When we look toward the center of the Milky Light: Beyond the Bulb -- Picture of the Day!
Milky Way Over Baobabs, Monrovia, Magadascar
As a so-called spiral galaxy, our Milky Way galaxy contains majestic arms of stars, dust, and gas that emanate from a central bulge area. Our Solar System resi
"18.11.2015 14:19:25" cxc.harvard.edu The Universe In High-Resolution X-Ray Spectra SAO High Energy Astrophysics Division Glossary Term of the Day!
Spectroscopy: The study of how atoms absorb and emit radiation. For example, it allows astronomers to determine the composition of stars. Scientists also use spectroscopy to study many other things with Chandra and other X-
"17.11.2015 15:13:30" chandra.si.edu Chandra :: Resources :: Q&A: Chandra Mission Question of the Day: What are the wavelengths of light that Chandra studies?
Find out the answer here: http://chandra.si.edu/resources/faq/chandra/chandra-19.html
"16.11.2015 22:27:34" lightexhibit.org Light: Stardust Taken from Mount Figueroa outside Santa Barbara, California, this time-lapse photograph reveals the spectacular light from distant stars, the Milky Way galaxy, as well as the setting Sun. The light from these different sources is scattered by the wat Light: Beyond the Bulb -- Picture of the Day!
Taken from Mount Figueroa outside Santa Barbara, California, this time-lapse photograph reveals the spectacular light from distant stars, the Milky Way galaxy, as well as the setting Sun. The light from t
"13.11.2015 14:40:43" is-universe.com Carnival of Space #430 Get ready for some awesome space news as we present the 430th Carnival of Space. We have a lot of exciting articles for you to check out. First up on the Venus Transit we have the almost occultation... This week's Carnival of Space includes an almost occultation, tales on how Mars lost its atmosphere, a daring flyby through icy plumes on Enceladus and more!
"12.11.2015 21:32:32" Timeline Photos Get a better understanding of the Delta Orionis system by looking at this artist's illustration.
More at http://chandra.si.edu/photo/2015/dori/more.html
"12.11.2015 21:02:30" Photos from Chandra X-ray Observatory's post Delta Orionis is a complex star system that contains five stars in total. Two of those stars are in a close orbit where one passes in front of another from the vantage point of Earth, which helps astronomers learn more about their properties. The mas
"12.11.2015 14:22:02" chandra.si.edu Chandra :: About Chandra :: Tracking Chandra In case you wondered if Chandra is really up there, take a look at these pictures shot by Gary Emerson with a 25 cm telescope at the E.E. Barnard Observatory. Gary used an astronomical program called "The Sky" to generate the positions of the spacecr A piece of space debris will likely burn up in the Earth's atmosphere tonight. Luckily, we know Chandra is far, far away! You can always track Chandra's orbit using this page and NASA's Eyes on the Solar System app.
"09.11.2015 22:41:44" According to Nature's Alex Witze who is at the meeting and live tweeting, Casey Lisse reports that five photons are consistent with nitrogen, one with oxygen.
"09.11.2015 22:39:36" From the current meeting of the Division of Planetary Sciences, Ralph McNutt announces that Chandra saw *six* photons from its Pluto observations! Lesson to be learned: even a handful (plus a finger) f photons can be useful!
"09.11.2015 17:33:13" smithsonianmag.com Why Carl Sagan is Truly Irreplaceable No one will ever match his talent as the “gatekeeper of scientific credibility” In honor of what would have been Carl Sagan's 71st birthday, we wanted to revisit Joel Achenbach's excellent article on Sagan in Smithsonian Magazine.
"09.11.2015 17:24:44" Happy Birthday, Carl Sagan!
"09.11.2015 16:31:11" lightexhibit.org View photos of our International Year of Light exhibits -- officially known as "Light: Beyond the Bulb" -- in places ranging from Seattle to San Juan.
"09.11.2015 14:37:38" mentalfloss.com 9 Transparently Amazing Facts About X-Rays In 1895, Wilhelm Roentgen, a professor of Physics in Worzburg, Bavaria, was the first to find a way to peer inside the body without surgery. On the evening of November 8, he was experimenting with the conduction of electricity through low-pressure ga "9 Transparently Amazing Facts About X-rays" at Mental Floss, including our favorite X-ray telescope (hint: it's us).
"06.11.2015 17:39:32" wnyc.org The Full Light Picture Kimberly Arcand and Megan Watzke from NASA's Chandra X-ray Observatory talk about their new book that covers all of light from radio waves at one end to gamma waves on the other. NPR's NYC hosted two members of the Chandra team to talk about light. Listen here: http://www.wnyc.org/story/full-light-picture/
"05.11.2015 20:46:07" chandra.si.edu Chandra :: Resources :: Q&A: Supernova Remnants and Neutron Stars Question of the Day: What does the "W" in W49B stand for?
"05.11.2015 18:26:45" chandra.harvard.edu Lunch with the Stars! Cheetahs are the fastest land animals on Earth, reaching speeds of up to 75 mph. Pretty fast. But things in space move much faster. Take the pulsar dubbed IGR J1104-6103. It might be moving at 6 million miles per hour.
"05.11.2015 13:57:10" chandra.si.edu Chandra X-ray Observatory - Learn About the Solar System Solar System (def.): The Sun together with the group of celestial bodies that are held by its attraction and revolve around it. While we wait for NASA's announcement later today about the fate of the Mars atmosphere, you can take a look at what Chandra has learned about the Red Planet and other bodies in our Solar System: http://chandra.si.edu/learn_solar.html
"05.11.2015 03:12:06" chandra.harvard.edu Evening with the Stars: Chandra and Hubble Find Evidence for Densest Nearby Galaxy.
There are *two* superlatives in this one. How often does this happen?
"05.11.2015 03:09:21" chandra.harvard.edu Flashback of the Day: Want to see two galaxies colliding? Take a look at the Antennae (no bugs involved)!
"04.11.2015 20:45:21" chandra.si.edu Find out the current position of Chandra in relation to the surface of the Earth from NASA/JPL's Eyes on the Solar System applet. Chandra's elliptical orbit takes the spacecraft to an altitude of approximately 139,000 km (86,500 mi) -- more than a th
"04.11.2015 17:51:01" light2015blog.org How to make a supernova Supernova explosions are one of the most powerful events in the known universe—the violent death of a star. They radiate tremendous energy, outshine entire galaxies, and release elements that make... Chandra is an excellent telescope for studying what happens when a star explodes (called a supernova) and its aftermath (aka, its remnant). Now scientists are trying to recreate what happens during these violent events in the laboratory. Take a peek
"03.11.2015 21:41:30" chandra.si.edu Recolor the Universe for #HourofCode with Pencil Code! Learn some basic coding skills while working with data from NASA's Chandra X-ray Observatory and other telescopes. No experience is necessary to create a real application of science that can tak
"03.11.2015 14:22:04" photostospace.com Check out this week's Carnival of Space!
Fermions/bosons, bio-mimicry, alien oceans, strange physics of #blackholes & more
"03.11.2015 03:06:51" chandra.harvard.edu Evening with the Stars: A Beautiful End to a Star's Life.
When a star like our Sun runs out of fuel, it will shed its outer layers in what is known as a "planetary nebula" (don't be fooled by the name -- it has nothing to do with planets. NGC 2392, a
"02.11.2015 20:33:47" chandra.harvard.edu Lunch with the Stars: Back in 2012, we announced that astronomers had discovered the most distant X-ray jet to date at the whopping distance of 12.4 billion light years away. To put this in perspective, the entire Universe is thought to be 13.7 billi
"02.11.2015 17:19:49" chandra.harvard.edu Ten years ago today, we released a new Chandra image of Westerlund 1, a dense cluster of young stars. It was first discovered by Bengt Westerlund, a Swedish astronomer, in 1961.
"30.10.2015 21:03:46" The Tarantula Nebula?
"30.10.2015 21:01:15" How about ghost-like fingers?
"30.10.2015 20:59:32" chandra.harvard.edu On this eve of All Hallowes' Eve (aka, Halloween), what's your favorite spooky image from Chandra? Here are a few to pick from:
X-ray jack o' lantern
"29.10.2015 21:37:29" Chandra X-ray Observatory Pulsar Punches Hole In Stellar Disk
These images contain X-ray evidence from Chandra that a clump of stellar material has been jettisoned away from a double star system at incredibly high speeds. Researcher Chandra Flashback of the Day – Pulsar Punches Hole In Stellar Disk
"29.10.2015 20:22:06" Space Scoop: The Teeny Tiny Planet Destroyer Space Scoop: The Teeny Tiny Planet Destroyer
Astronomers have recently discovered evidence that a planet may have been destroyed in our very own Galaxy.
Related Links: http://chandra.harvard.edu/photo/2015/ngc6388/kids.html
More Chandra Podcasts:
"29.10.2015 17:53:09" Chandra X-ray Observatory To learn more about neutron stars click here: http://chandra.si.edu/xray_sources/neutron_stars.html
Astronomy Fact #2
If a baseball were made of neutron star material it would weigh about 20 trillion kg, or about 40 times the estimated weight of the This is one of my favorite astronomy facts! Learn more about neutron stars right here: http://chandra.si.edu/xray_sources/neutron_stars.html
What's your favorite astronomy fact?
"29.10.2015 16:14:41" Chandra X-ray Observatory Illustration of Cygnus X-1
Cygnus X-1 is located near large active regions of star formation in the Milky Way. An artist's illustration depicts what astronomers think is happening within the Cygnus X-1 system. Cygnus X-1 is a so-called stellar-mass Cygnus X-1 is a so-called stellar-mass black hole, a class of black holes that comes from the collapse of a massive star. Get to know more about this interesting object: http://chandra.si.edu/photo/2011/cygx1/
And learn more about black holes right
"29.10.2015 15:13:08" Chandra X-ray Observatory There was nowhere to go but everywhere, so just keep on rolling under the stars. - Jack Kerouac
NGC 281: A nebula with active star formation about 9,200 light years from Earth.
Thi Perfect advice from Jack Kerouac.
More about him and NGC 281 right here: http://chandra.si.edu/resources/illustrations/pins/ngc281_pin.html
"28.10.2015 22:01:58" Chandra X-ray Observatory 3 Quasars: NASA's Chandra Suggests Black Holes Gorging at Excessive Rates
A new study of 51 distant quasars using Chandra reveals a population of black holes that consume excessive amounts of matter. The a Chandra Flashback of the Day – 3 Quasars: NASA's Chandra Suggests Black Holes Gorging at Excessive Rates
"28.10.2015 20:40:24" Chandra X-ray Observatory The Milky Way is not an island universe,but a member of a small cluster of galaxies called the Local Group. (Illustration: NASA/CXC/M.Weiss)
http://chandra.si.edu/resources/illustrations/infographics.html Get to know our very own Milky Way galaxy just a bit better. A larger version (#15): http://chandra.si.edu/resources/illustrations/infographics.html
"28.10.2015 18:30:35" chandra.si.edu Chandra :: Photo Album :: Cassiopeia A :: November 15, 2013 One of the most famous objects in the sky - the Cassiopeia A supernova remnant - will be on display like never before, thanks to NASA's Chandra X-ray Observatory and a new project from the Smithsonian Institution. A new three-dimensional (3D) viewer, Lunch with the Stars! Exploring the Third Dimension of Cassiopeia A, for lunch time reading: http://chandra.si.edu/photo/2013/casa/
"28.10.2015 16:45:24" lightexhibit.org Light: Noctilucent Clouds Noctilucent clouds, or "night clouds," are some of the strangest cloud formations you may see. These clouds are normally too faint to be seen by the human eye-unless illuminated by sunlight from below the horizon while the lower layers of the Earth's LIGHT: Beyond the Bulb – Image of the Day!
These are the highest clouds on Earth, forming on tiny crystals of water ice and dust particles near the edge of space some 50 miles above our planet's surface.
"28.10.2015 15:19:29" Chandra X-ray Observatory Centaurus A: An active galaxy at a distance of 10 million light years from Earth.
This image of Centaurus A shows a spectacular new view of a supermassive black hole's power. Je Very true words from the Doctor! We have been searching and are excited by the things we have found.
Learn more about the Doctor and this image of Centaurus A: http://chandra.si.edu/resources/illustrations/pins/cena_pin.html
"27.10.2015 22:44:14" Chandra X-ray Observatory El Gordo (ACT-CL J0102-4915): NASA's Chandra Finds Largest Galaxy Cluster in Early Universe
This galaxy cluster, which has been nicknamed "El Gordo" for the "big" or "fat" one in Spanish, is a remark Chandra Flashback of the Day – El Gordo (ACT-CL J0102-4915): NASA's Chandra Finds Largest Galaxy Cluster in Early Universe
"27.10.2015 21:12:05" Glossary Term of the Day!
Plasma: A state of matter wherein all atoms are ionized; a mixture of free electrons and free atomic nuclei.
"27.10.2015 20:09:16" lightexhibit.org Light: Aurora Borealis Streams of particles with electric charge are continually leaving the Sun and traveling through the Solar System. As these particles approach the Earth, some of them are channeled by the planet's magnetic field toward the North and South poles where LIGHT: Beyond the Bulb – Image of the Day!
The array of colors in auroras is due to the fact that different atoms emit different colors when they get pumped up with energy from collisions.
"27.10.2015 19:07:03" huffingtonpost.com The Real Stars of the Show There is a very powerful scientific concept that not only informs every area of STEM, including astronomy, but allows us to see well beyond those twinkling balls of gas in the night sky. That concept is light. Who is the real star of the show?
Our Visualization Lead, Kimberly Kowal Arcand, is on The Huffington Post to talk about the language of the Universe and why we care.
"27.10.2015 17:46:56" chandra.harvard.edu Chandra :: Photo Album :: SNR 0509-67.5 :: December 14, 2010 This colorful creation was made by combining data from two of NASA's Great Observatories. Optical data of SNR 0509-67.5 and its accompanying star field, taken with the Hubble Space Telescope, are composited with X-ray energies from the Chandra X-ray Lunch with the Stars! SNR 0509-67.5: Supernova Bubble Resembles Holiday Ornament, for lunch time reading: http://chandra.harvard.edu/photo/2010/snr0509/
"27.10.2015 16:28:55" nextbigfuture.com Asteroid 2015 TB145, a planetary conjunction, ExoMars, #womeninstem & more #astronews
"27.10.2015 15:16:26" chandra.si.edu Among the most energetic events in the universe is the merger of groups of galaxies to form giant clusters containing thousands of galaxies.
"26.10.2015 22:01:53" Chandra X-ray Observatory Chandra Archive Collection: Preserving the Legacy of the X-ray Universe
This collection of images represents the thousands of observations that are permanently stored and accessible to the world in th Chandra Flashback of the Day – Chandra Archive Collection: Preserving the Legacy of the X-ray Universe
"26.10.2015 21:39:21" live.iop-pp01.agh.sleek.net Physics World Pugpig for Web Our Visualization lead Kimberly Kowal Arcand talks about the legacy of the Chandra International Year of Light 2015 project "Light Beyond the Bulb"
"26.10.2015 20:48:13" chandra.harvard.edu Chandra :: Photo Album :: SNR G54.1+0.3 :: 25 Jun 02 The Chandra image of the distant supernova remnant SNR G54.1+0.3 reveals a bright ring of high-energy particles with a central point-like source. This observation enabled scientists to use the giant Arecibo Radio Telescope to search for and locate th Question of the Day!
I've read the material at http://chandra.harvard.edu/photo/2002/g541/index.html and am wondering if there is a diameter calculated for the size of the neutron star? the point-like source? Rotating at 7 times per second it wouldn'
"26.10.2015 18:59:54" chandra.si.edu Chandra :: Chronicles :: The Wonderful (And Fearful) Dark Side :: October 22, 2003 About four hundred years ago, the great astronomer, Johannes Kepler, realized that the very fact that the sky is dark at night was telling something profound about the nature of the universe.
"26.10.2015 17:56:57" Chandra X-ray Observatory When the path of a light ray is bent, the image of the light source becomes distorted. This is what happens when light is bent as it passes from the air into the lenses of eyeglasses, producing a magnified image. Likewise, when sunlight is deflected The bending of light by a lens or by the atmosphere is an example of refraction, and is due to the change of the speed of light as it moves from one medium to another, such as from air to glass, or through air which is gradually changing in density.
"26.10.2015 16:48:19" chandra.harvard.edu Chandra :: Photo Album :: M60-UCD1 :: September 24, 2013 The densest galaxy in the nearby Universe may have been found, as described in our latest press release. The galaxy, known as M60-UCD1, is located near a massive elliptical galaxy NGC 4649, also called M60, about 54 million light years from Earth. Lunch with the Stars! M60-UCD1: NASA's Hubble and Chandra Find Evidence for Densest Nearby Galaxy, for lunch time reading: http://chandra.harvard.edu/photo/2013/m60/
"26.10.2015 15:36:02" Chandra X-ray Observatory Cassiopeia A: A supernova remnant about 11,000 light years away.
This image presents a beautiful composite of X-rays from Chandra (red, green, and blue) and optical data from Hu We certainly love them Mr. Bailey!
Learn more about this image of supernova remnant Cassiopeia A right here: http://chandra.si.edu/resources/illustrations/pins/casa_pin.html
"23.10.2015 22:01:06" Chandra X-ray Observatory NASA's Chandra Finds Massive Black Holes Common in Early Universe
This composite image combines the deepest X-ray image ever taken with optical and infrared data from Hubble. Astronomers obtained wha Chandra Flashback of the Day – NASA's Chandra Finds Massive Black Holes Common in Early Universe
"23.10.2015 21:32:03" chandra.si.edu Glossary Term of the Day!
Planetary nebula: The ejected envelope of a red giant star, spread over a volume roughly the size of our solar system, with a hot central star that is in the process of becoming a white dwarf star.
"23.10.2015 19:17:17" Chandra X-ray Observatory Astronomy Fact #16
Find out what other habits (good and bad) that young stars possess: http://chandra.si.edu/xray_sources/young_stars.html
Credit: NASA/CXC/M.Weiss Did you know that some stars could be so rude? Young stars aren't all bad though. Learn about them here: http://chandra.si.edu/xray_sources/young_stars.html
"23.10.2015 17:49:26" lightexhibit.org Light: Aurora Borealis Some of the most famous light shows in the world are called auroras or, more commonly in the Northern Hemisphere, the "Northern Lights." What causes these spectacular displays? Streams of particles with electric charge are continually leaving the Sun LIGHT: Beyond the Bulb – Image of the Day!
When certain particles collide with atoms in the Earth's atmosphere, the atoms in the atmosphere are excited give off light of a particular color tied to that type of atom.
"23.10.2015 16:45:09" chandra.harvard.edu Chandra :: Photo Album :: GRB 050709 :: 05 Oct 05 An artist's rendering (left) of GRB 050709 depicts a gamma-ray burst that was discovered on 9 July, 2005 by NASA's High-Energy Transient Explorer. The burst radiated an enormous amount of energy in gamma-rays for half a second, then faded away. Three Lunch with the Stars! GRB 050709: 35-Year-Old Cosmic Mystery Solved in a Flash, for lunch time reading: http://chandra.harvard.edu/photo/2005/grb050709/
"23.10.2015 15:20:55" A Tour of ASASSN-14li A Tour of ASASSN-14li
When something, like a star or a planet, wanders too close to a black hole, it is usually not good news for that object.
Related Link: http://chandra.si.edu/photo/2015/tidal/
More Chandra Podcasts: http://chandra.si.edu/resou
"22.10.2015 22:00:16" Chandra X-ray Observatory Bootes Field: More Than a Thousand Black Holes
http://chandra.harvard.edu/photo/2007/bootes/ Chandra Flashback of the Day – Bootes Field: More Than a Thousand Black Holes
"22.10.2015 20:21:41" Timeline Photos For #ExoplanetWeek check out this poster on exoplanets that you can download and print! http://chandra.si.edu/resources/handouts/lithos/index.html (#3)
"22.10.2015 19:10:27" lightexhibit.org Light: Car Headlights Belfort, France While the first headlights on cars were fueled by kerosene or acetylene, today's versions are far safer and more effective. Many car headlights these days are powered by running electricity through a gas, causing it to glow brightly. Technology has l LIGHT: Beyond the Bulb – Image of the Day!
In the future, reflected lasers may power more of our headlights, providing a more powerful and energy-efficient (yet still safe) beam that lights our way through the night.
"22.10.2015 18:09:01" reddit.com We are NASA Scientists Looking for Habitable Planets Around other Stars. Ask Us Anything! • /r/IAmA We're NASA scientists here to answer your other-worldly questions about what we're doing to help find habitable planets outside the solar system.... Chandra Astrophysicist, Scott Wolk, is joined by others on the NASA team answering your questions about distant worlds on Reddit right now!
"22.10.2015 16:30:59" Timeline Photos Reddit AMA today (Oct 22), 2-4pm ET with NASA team members about Exoplanets!
Whether it's looking for distant worlds by staring at stars for changes in light
"22.10.2015 15:26:31" chandra.si.edu Destroyed Star Rains onto Black Hole, Winds Blow it Back | ChandraBlog | Fresh Chandra News Astronomers have observed material being blown away from a black hole after it tore a star apart, as reported in our press release. This event, known as a "tidal disruption," is depicted in the artist's illustration. Official Chandra Blog!
"21.10.2015 21:59:41" Chandra X-ray Observatory NGC 2392: A Beautiful End to a Star’s Life
When a star like our Sun uses up all of the hydrogen in its core, it becomes what is called a "planetary nebula." During this stage, the star begins to cool and exp Chandra Flashback of the Day – NGC 2392: A Beautiful End to a Star’s Life
"21.10.2015 21:19:48" Glossary Term of the Day!
Photosphere: The visible surface of the Sun, lying just above the uppermost layer of the Sun's interior, and just below the chromosphere.
"21.10.2015 20:17:42" lightexhibit.org Light: The Grid There are many different ways cities can produce light. Streetlights provide light when it is needed through high pressure sodium lamps or by newer and more efficient downward focused light-emitting diodes (a.k.a., LEDs). Headlights in cars use sophi LIGHT: Beyond the Bulb – Image of the Day!
Welcome to the Grid
Light defines our modern cities in many ways, as seen here in this photograph of Salt Lake City, Utah taken from astronauts aboard the International Space Station.
"21.10.2015 18:52:40" chandra.si.edu Chandra :: Photo Album :: NGC 1232 :: August 14, 2013 Observations with NASA's Chandra X-ray Observatory have revealed a massive cloud of multimillion-degree gas in a galaxy about 60 million light years from Earth. The hot gas cloud is likely caused by a collision between a dwarf galaxy and a much large Lunch with the Stars! NGC 1232: Dwarf Galaxy Caught Ramming Into a Large Spiral, for lunch time reading: http://chandra.si.edu/photo/2013/ngc1232/
"21.10.2015 17:04:48" Black Holes ASASSN-14li: Destroyed Star Rains onto Black Hole, Winds Blow it Back
Astronomers have observed material being blown away from a black hole after it tore a star apart, using a trio of X-ray telescopes. The art
"21.10.2015 16:48:16" chandra.si.edu Chandra :: Photo Album :: Chandra Archive Collection :: October 8, 2015 Archives, in their many forms, save information from today that people will want to access and study in the future. This is a critical function of all archives, but it is especially important when it comes to storing data from today's modern telescop For #BacktotheFutureDay we're banking X-ray data for the future. http://chandra.si.edu/photo/2015/archives/
"21.10.2015 15:39:51" Photos from Chandra X-ray Observatory's post It's #BacktotheFutureDay ! In honor we're looking to the future with this 2016 calendar that you can download and print at home: http://chandra.harvard.edu/resources/handouts/lithos/calendar16.html
"20.10.2015 22:01:32" Chandra X-ray Observatory J144547-5931 and J144701-5919: Hunting for the Milky Way's Heaviest Star
Credit J144547-5931: X-ray: NASA/U. of Sydney/G.Anderson et al; IR: NASA/JPL-Caltech
Credit J144701-5919: X-ray: NASA/U. of Sydn Chandra Flashback of the Day – J144547-5931 and J144701-5919: Hunting for the Milky Way's Heaviest Star
"20.10.2015 20:20:39" Timeline Photos It's #ExoplanetWeek! Here are just a few studies on exoplanets from Chandra:
"20.10.2015 19:17:45" Chandra Infographics Blasts from the Past: Historic Supernovas
Every 50 years or so, a star in our Galaxy blows itself apart in a supernova explosion, one of the most violent events in the universe.
"20.10.2015 17:48:03" lightexhibit.org Light: Lasers In The Sky From applications in fields of manufacturing to medicine to the military, lasers are all around us. While there are many different types of lasers, there are some commonalities among them. All lasers are based on controlling the way that energized at LIGHT: Beyond the Bulb – Image of the Day!
Lasers In The Sky
This image shows one innovative use of lasers. By beaming a laser into the sky, astronomers can measure and then compensate for the blurring effects of the Earth's atmosphere, allowing for
"20.10.2015 16:33:28" chandra.harvard.edu Chandra :: Photo Album :: N49 :: May 24, 2010 This beautiful composite image shows N49, the aftermath of a supernova explosion in the Large Magellanic Cloud. A new long observation from NASA's Chandra X-ray Observatory, shown in blue, reveals evidence for a bullet-shaped object being blown out o Lunch with the Stars! N49: Stellar Shrapnel Seen in Aftermath of Explosion, for lunch time reading: http://chandra.harvard.edu/photo/2010/n49/
"20.10.2015 15:28:43" Photos from Chandra X-ray Observatory's post Do you have access to a 3D printer? If you do, print your own Chandra spacecraft and a model of the supernova remnant, Cassiopeia A!
"19.10.2015 21:58:30" Chandra X-ray Observatory M31: Black Hole Bonanza Turns up in Galaxy Next Door
Twenty-six black hole candidates – the largest number found in a galaxy outside our own – have been discovered in the Milky Way's galactic neighbor, Andromeda Chandra Flashback of the Day – M31: Black Hole Bonanza Turns up in Galaxy Next Door
"19.10.2015 20:24:45" mo-www.cfa.harvard.edu It is #AstronomyNight tonight! You can use the online MicroObservatory Network to capture your very own images of space with real telescopes that you control over the internet!
"19.10.2015 19:15:10" digital-science.com Launching A Career in Science And Supporting STEM Pathways #MySTEMrolemodel - Digital Science As part of Digital Science’s celebrations for Ada Lovelace Day, for the month of October we are running a series of blog posts where inspiring women in STEM are sharing their personal role models. Anyone can get involved and we encourage you to share Chandra's Visualization Lead, Kim Arcand, has been inspired by the micro, the macro, and Astronaut Cady Coleman. Learn more about Kim's path to STEM in this blog.
"19.10.2015 17:50:43" RI Star Party RI Star Party On Monday, October 19th at 7:00pm, there will be an out-of-this-world event on the lawn of the Rhode Island State House. This event will provide an evening of stargazing -- weather permitting -- that is free and open to all members of the public.
T Will you be in Rhode Island tonight? Join NASA's Chandra X-ray Observatory Visualization Lead, Kim Arcand, on the State House lawn to celebrate the White House Astronomy Night and Light 2015!
"19.10.2015 16:58:53" nasa.tumblr.com It's #ExoplanetWeek! Meet NASA - National Aeronautics and Space Administration's fleet of #exoplanet hunters on Tumblr!
"19.10.2015 15:27:36" Chandra X-ray Observatory The Man Behind The Name
http://www.chandra.si.edu/about/chandra.html NASA's premier X-ray observatory was named the Chandra X-ray Observatory in honor of the late Indian-American Nobel laureate, Subrahmanyan Chandrasekhar. Today we celebrate his birthday! Learn more about him right here: http://www.chandra.si.edu/abou
"16.10.2015 22:31:48" Chandra X-ray Observatory Sagittarius A*: NASA'S Chandra Catches Our Galaxy's Giant Black Hole Rejecting Food
One of the biggest observing campaigns ever performed by Chandra has provided new understanding into why gas near the gian Chandra Flashback of the Day – Sagittarius A*: NASA'S Chandra Catches Our Galaxy's Giant Black Hole Rejecting Food
"16.10.2015 20:34:09" Chandra Illustrations The artist's illustrations represent a possible explanation for a recent increase in X-ray flares from Sgr A* seen by three telescopes including Chandra. As part of a long monitoring campaign, astronomers observed Sgr A* as a mysterious object called
"16.10.2015 19:07:49" lightexhibit.org Light: Applications of LASERs Applications of LASERs - the word is an acronym for the process used to produce its unique form of light- have exploded in the past few decades. From telecommunications to transportation, medicine to manufacturing, military, entertainment and researc LIGHT: Beyond the Bulb – Image of the Day!
Applications of LASERs
Unlike sunlight or light from a light bulb, the waves of laser light are orderly, in step, allowing laser beams to be focused to very small spots for cutting, drilling and engraving ma
"16.10.2015 17:48:28" mo-www.cfa.harvard.edu So you won't be in Washington, D.C. for #AstronomyNight on Oct 19th? No problem! You can use the online MicroObservatory Network to capture your very own images of space with real telescopes that you control over the internet!
"16.10.2015 16:49:16" chandra.harvard.edu Chandra :: Photo Album :: NGC 922 :: December 6, 2012 In this holiday season of home cooking and carefully-honed recipes, some astronomers are asking: what is the best mix of ingredients for stars to make the largest number of plump black holes? Lunch with the Stars! NGC 922: Searching for the Best Black Hole Recipe, for lunch time reading: http://chandra.harvard.edu/photo/2012/ngc922/
"16.10.2015 15:41:06" chandra.si.edu Chandra :: Field Guide to X-ray Sources :: Neutron Stars/X-ray Binaries Chandra Images:Neutron Stars Printable Field Guide: Neutron Stars Questions & Answers:Supernova Remnants and Neutron Stars More: SCO X-1 When a massive star goes supernova, it can leave behind an extremely dense remnant star called a neutron star.
"15.10.2015 21:48:43" Chandra X-ray Observatory LHa115-N19: Blowing Cosmic Super Bubbles
http://chandra.harvard.edu/photo/2007/n19/ Chandra Flashback of the Day – LHa115-N19: Blowing Cosmic Super Bubbles
"15.10.2015 19:07:19" Chandra X-ray Observatory Learn About Supernovas
Check out this portal to access videos, images, blogs and other information about one of the most dramatic events in the cosmos, supernovas!
http://chandra.si.edu/learn_snr.html This is your one stop shop to learn all about supernovas and supernova remnants. Check it out: http://chandra.si.edu/learn_snr.html
"15.10.2015 17:44:04" chandra.harvard.edu Chandra :: Photo Album :: 3C186 :: October 26, 2010 NASA's Chandra X-ray Observatory has observed an unusual galaxy cluster that contains a bright core of relatively cool gas surrounding a quasar called 3C 186. This is the most distant such object yet observed, and could provide insight into the trigg Lunch with the Stars! 3C186: Precocious Galaxy Cluster Identified by Chandra, for lunch time reading: http://chandra.harvard.edu/photo/2010/3c186/
"15.10.2015 16:32:08" lightexhibit.org Light: Fiber Optics, Connecting the World Optical fibers, hair-thin flexible strands of glass or plastic, have revolutionized our world. Because of their capacity to carry massive amounts of data in the form of light, optical fibers serve as the backbone of the Internet. Almost every video a LIGHT: Beyond the Bulb – Image of the Day!
Almost every video and photo you download and nearly every email and text you send travels over optical fiber, sometimes across the world.
"15.10.2015 15:12:53" chandra.si.edu Chandra :: Field Guide to X-ray Astronomy :: Binary and Multiple Star Systems More than 80% of all stars are members of multiple star systems containing two or more stars. Exactly how these systems are formed is not well understood. Some are thought to form when a collapsing cloud of gas breaks apart into two or more clouds wh The evolution of stars can be changed dramatically if they are in a close binary system. These changes depend on how close the stars are to one another, and how massive the stars are.
"14.10.2015 22:04:12" Chandra X-ray Observatory Runaway Pulsar Firing an Extraordinary Jet
An extraordinary jet trailing behind a runaway pulsar is seen in this composite image that contains X-ray data from Chandra (purple), radio data from the AC Chandra Flashback of the Day – Runaway Pulsar Firing an Extraordinary Jet
"14.10.2015 20:17:39" Chandra X-ray Observatory "I have loved the stars too fondly, to be fearful of the night." - Sarah Williams.
NGC 602: Young stars in the Small Magellanic Cloud, one of the closest galaxies to our Milky Way.
http://chandra.si.edu/resources/illustrations/pins/ngc602_pin.html Yes we have! Learn more about Sarah Williams and this featured image, NGC 602, right here:http://chandra.si.edu/resources/illustrations/pins/ngc602_pin.html
"14.10.2015 18:50:35" lightexhibit.org Light: Lightbulbs in X-ray Light Medical X-ray imaging works when a body part is placed in between an X-ray source on one side and a camera or detector on the other. Since bone is denser than muscle tissue and skin, fewer X-rays pass through it. This creates a shadow image on the ca LIGHT: Beyond the Bulb – Image of the Day!
Lightbulbs in X-ray Light
In this piece of art, light bulbs were placed in a medical X-ray machine. The artist then added color to the individual light bulbs to create the desired effect.
"14.10.2015 17:34:38" mo-www.cfa.harvard.edu MicroObservatory Splash Page White House Astronomy Night is this Monday, October 19! Use the MicroObservatory Telescopes this week to Observe with NASA. Then share your best image, compared with a NASA image, on your favorite social media site. Find out more at:
"14.10.2015 17:31:25" MicroObservatory Post your OWN images!
"14.10.2015 16:37:31" chandra.harvard.edu Chandra :: Photo Album :: NGC 4178 :: October 24, 2012 One of the lowest mass supermassive black holes ever observed in the middle of a galaxy has been identified, thanks to NASA's Chandra X-ray Observatory and several other observatories. The host galaxy is of a type not expected to harbor supermassive Lunch with the Stars! NGC 4178: Revealing a Mini-Supermassive Black Hole, for lunch time reading: http://chandra.harvard.edu/photo/2012/ngc4178/
"14.10.2015 15:31:20" Photos from Chandra X-ray Observatory's post "1000 year" rain, exoplanet habitability, planetary conjunctions, new images, more #astronews
"13.10.2015 22:27:19" Chandra X-ray Observatory CID-42: A Black Hole Slingshot?
Credit: X-ray: NASA/CXC/SAO/F.Civano et al. Optical: NASA/STScI Chandra Flashback of the Day – CID-42: A Black Hole Slingshot?
"13.10.2015 21:06:52" Glossary Term of the Day!
Photon: Individual packet of electromagnetic energy that makes up electromagnetic radiation.
"13.10.2015 20:04:14" chandra.harvard.edu "I still hear young girls say, ‘I didn’t think girls could do that’ -Astronaut Eileen Collins
"13.10.2015 18:47:23" Light Beyond the Bulb: Bent Light in Space Light Beyond the Bulb: Bent Light in Space
One of the most interesting characteristics of light is that the path that it travels can bend.
Check out this wonderful outreach project from Chandra: http://lightexhibit.org/
And watch more podcasts: ht
"13.10.2015 17:24:41" Chandra X-ray Observatory Astronomy Fact #15
NASA's Chandra X-ray Observatory, which was launched and deployed by Space Shuttle Columbia on July 23, 1999, is the most sophisticated X-ray observatory built to date. This mission was the first NASA shuttle mission to be command “Whether I want to be a role model or not, I am" - Astronaut Eileen Collins
"13.10.2015 16:35:21" chandra.harvard.edu Chandra :: Photo Album :: Sagittarius A* :: October 24, 2013 Researchers using NASA's Chandra X-ray Observatory have found evidence that the normally dim region very close to the supermassive black hole at the center of the Milky Way Galaxy flared up with at least two luminous outbursts in the past few hundred Lunch with the Stars! Sagittarius A*: A Glimpse of the Violent Past of Milky Way's Giant Black Hole, for lunch time reading: http://chandra.harvard.edu/photo/2013/sgra_echoes/
"13.10.2015 15:27:00" chandra.harvard.edu It's Ada Lovelace Day! To celebrate we're going to feature Commander Eileen Collins and Cady Coleman, who are not only role models in the field of STEM for women but also launched the Chandra X-ray Observatory in 1999. http://chandra.harvard.edu/blog
"12.10.2015 22:02:32" Chandra X-ray Observatory Sagittarius A*: NASA's Chandra Detects Record-Breaking Outburst from Milky Way's Black Hole
Astronomers have detected the largest X-ray flare ever from the supermassive black hole at the center of the Milky Way Chandra Flashback of the Day – Sagittarius A*: NASA's Chandra Detects Record-Breaking Outburst from Milky Way's Black Hole
"12.10.2015 21:12:15" Glossary Term of the Day!
Photoelectric effect: A basic physical phenomenon that demonstrates radiation to be composed of particles.
"12.10.2015 19:39:54" chandra.harvard.edu Question of the Day!
Should it be concluded that black holes reach unimaginable limits of expansion?
Black holes in the Universe do not grow without limit. The vastness of space and the relative weakness of gravity mean that even very massi
"12.10.2015 18:33:30" chandra.si.edu Chandra :: Photo Album :: Cassiopeia A :: November 15, 2013 One of the most famous objects in the sky - the Cassiopeia A supernova remnant - will be on display like never before, thanks to NASA's Chandra X-ray Observatory and a new project from the Smithsonian Institution. A new three-dimensional (3D) viewer, Lunch with the Stars! Exploring the Third Dimension of Cassiopeia A, for lunch time reading: http://chandra.si.edu/photo/2013/casa/
"12.10.2015 16:30:07" lightexhibit.org Light: Lightning over Quebec. In massive storm clouds, the friction between large particles composed of many atoms builds up a large separation of electric charge and creates voltages approaching 100 million volts. When the voltage becomes this large, it can cause an explosive el LIGHT: Beyond the Bulb – Image of the Day!
Lightning over St-Laurent River
The heat generated during a lightning strike is hotter than the surface of the Sun, and this heat is the source of the brilliant white-blue flash that we see.
"12.10.2015 15:12:58" chandra.si.edu Banking X-ray Data for the Future | ChandraBlog | Fresh Chandra News Archives, in their many forms, save information from today that people will want to access and study in the future. This is a critical function of all archives, but it is especially important when it comes to storing data from today's modern telescop Have you read our latest blog? It talks about how incredibly important it is to create archives.
"09.10.2015 22:09:51" Chandra X-ray Observatory Abell 85: Dark Energy Found Stifling Growth in Universe
http://chandra.harvard.edu/photo/2008/darkenergy/ Chandra Flashback of the Day – Abell 85: Dark Energy Found Stifling Growth in Universe
"09.10.2015 21:34:06" Glossary Term of the Day!
period-luminosity relation: A relation between the pulsation period of a Cepheid variable and its absolute brightness. Measurement of the pulsation period allows the distance of the star to be determined.
"09.10.2015 20:15:40" chandra.harvard.edu Chandra :: Photo Album :: N132D :: March 12, 2008 This Chandra X-ray Observatory image shows the debris of a massive star explosion in the Large Magellanic Cloud, a small galaxy about 160,000 light years from Earth. The supernova remnant (SNR) shown here, N132D, is the brightest in the Magellanic cl Question of the Day!
Can a black dwarf become a nebula and a black hole both?
The term "nebula" was in the past applied by astronomers to all kinds of hazy patches in the sky, so many different types of objects have the name "Nebula" attache
"09.10.2015 18:17:33" lightexhibit.org Light: Lights Over Dublin For centuries, lighthouses have served an important role: they have kept mariners and other seafarers safe. By illuminating rough stretches of water through their powerful beacons of light, they help prevent nautical accidents. Lighthouses also serve LIGHT: Beyond the Bulb – Image of the Day!
Lights Over Dublin
From the top left to the lower right in the sky, Venus, Jupiter, and the Moon— reflecting light from the Sun— can be seen hanging over Dublin, Ireland.
"09.10.2015 16:38:30" chandra.harvard.edu Chandra :: Photo Album :: M101 :: May 24, 2012 This image of the Pinwheel Galaxy, or also known as M101, combines data in the infrared, visible, ultraviolet and X-rays from four of NASA's space-based telescopes. This multi-spectral view shows that both young and old stars are evenly distributed a Lunch with the Stars! M101: A Pinwheel in Many Colors, for lunch time reading: http://chandra.harvard.edu/photo/2012/m101/
"09.10.2015 15:34:38" Banking X-ray Data for the Future Banking X-ray Data for the Future
Chandra X-ray Observatory has collected data for over sixteen years on thousands of different objects throughout the Universe.
Learn more about these extraordinary objects: http://chandra.si.edu/photo/2015/archives
"08.10.2015 22:02:06" Chandra X-ray Observatory 4C+00.58: Black Hole Jerked Around Twice
http://chandra.si.edu/photo/2010/4c0058/ Chandra Flashback of the Day – 4C+00.58: Black Hole Jerked Around Twice
"08.10.2015 20:41:27" Chandra X-ray Observatory NASA X-ray Telescopes Find Black Hole May Be a Neutrino Factory
The supermassive black hole at the center of the Milky Way may be producing tiny particles, called neutrinos, that have virtually no mass and Question of the Day!
How do we know there's a supermassive black hole in the center of the Milky Way?
Astronomers have used careful observations of the motions of stars around the center of our Galaxy to make inferences about the mass of th
"08.10.2015 18:52:06" chandra.harvard.edu chandra.harvard.edu Lunch with the Stars! NASA'S Chandra Finds Fastest Wind From Stellar-Mass Black Hole, for lunch time reading: http://chandra.harvard.edu/photo/2012/igr/
"08.10.2015 17:48:01" lightexhibit.org Light: Fireworks How do our eyes detect color? When light rays reflect off of an object, they can enter our eyes through the cornea, the transparent outer cover. From there, the light travels through the pupil (the black circle in the center of the colored part of ou LIGHT: Beyond the Bulb – Image of the Day!
Fireworks Australia Day
All of the nerves in the retina convert light into electrical impulses that ultimately travel to the optic nerve in our brain where an image is produced.
"08.10.2015 16:42:50" 2015 Chandra Calendar Chandra 2015 Calendar: October
New Chandra data gives insight into the explosion that produced SN 2014J, one of the closest supernovas discovered in decades. SN 2014J is a so-called Typ
"08.10.2015 15:17:48" Collections Chandra Archive Collection: Banking X-ray Data for the Future
These six images represent the potential for new images and discoveries housed in the Chandra Data Archive. To celebrate October as American Arc
"07.10.2015 22:05:47" Chandra X-ray Observatory Cepheus B: Trigger-Happy Star Formation
http://chandra.harvard.edu/photo/2009/cepb/ Chandra Flashback of the Day – Cepheus B: Trigger-Happy Star Formation
"07.10.2015 20:09:56" Chandra X-ray Observatory Illustration of Saturn's Rings
This illustration shows a close-up of Saturn's rings. These rings are thought to have formed from material that was unable to form into a Moon because of tidal forces from Saturn, or from a Moon that was broken up by Question of the Day!
Is there more energy coming out of Saturn's rings than the sun provides? Probably less, as with Saturn itself or Jupiter?
X-ray Image of Saturn Less energy is emitted from the rings than is absorbed by them from the Sun
"07.10.2015 18:14:55" lightexhibit.org Light: Pink And Purple Sunset At sunrise and sunset, light from the Sun must take a much longer path through the Earth's atmosphere than it does during the middle part of the day. This means more of the blue and indigo light of sunlight is scattered away because these shorter wav LIGHT: Beyond the Bulb – Image of the Day!
Pink & Purple Sunset
Factors -- including dust, pollution, haze, and cloud formations – may also affect the colors of a sunset, creating a more complicated palette of light as the Sun dips below the horizon.
"07.10.2015 16:42:41" chandra.harvard.edu Chandra :: Photo Album :: M82 and J144701-5919 :: April 29, 2010 This composite image of the nearby starburst galaxy M82 shows Chandra X-ray Observatory data in blue, optical data from the Hubble Space Telescope in green and orange, and infrared data from the Spitzer Space Telescope in red. The pullout is a Chandr Lunch with the Stars! M82 and J144701-5919: "Survivor" Black Holes May Be Mid-Sized, for lunch time reading: http://chandra.harvard.edu/photo/2010/m82/
"07.10.2015 15:41:15" Photos from Chandra X-ray Observatory's post Pluto "Snakeskin," Martian water, black holes & Neil deGrasse Tyson in this week's #astronews
"06.10.2015 22:00:52" Chandra X-ray Observatory BP Psc:
Chandra Finds Evidence for Stellar Cannibalism
Credit: X-ray (NASA/CXC/RIT/J.Kastner et al), Optical (UCO/Lick/STScI/M.Perrin et al); Illustration: NASA/CXC/M.Weiss Chandra Flashback of the Day – BP Psc: Chandra Finds Evidence for Stellar Cannibalism
"06.10.2015 21:36:35" Glossary Term of the Day!
Partial eclipse: Celestial event during which only a part of the occulted body is blocked from view.
"06.10.2015 20:12:20" chandra.harvard.edu Chandra :: Photo Album :: Perseus Cluster :: 9 Sep 03 A 53-hour Chandra observation of the central region of the Perseus galaxy cluster (left) has revealed wavelike features (right) that appear to be sound waves. The features were discovered by using a special image-processing technique to bring out sub Question of the Day!
Regarding the story on Perseus, I thought that no information leaves a black hole. Light can't escape, so how can sound? Especially when the sound is generated from the black hole itself?
"06.10.2015 18:56:16" lightexhibit.org Light: Red Sunset Why do sunsets often appear red? The answer has to do with a particular behavior of light: scattering. When sunlight strikes certain atoms and molecules in the Earth's atmosphere, some of the light is absorbed and re-emitted as a light wave in variou LIGHT: Beyond the Bulb – Image of the Day!
At sunset, the sunlight must pass through more of the Earth's atmosphere and, thus, more of the yellow wavelength is scattered away. This leaves us frequently with a reddish orange sunset to admir
"06.10.2015 16:29:57" chandra.harvard.edu Chandra :: Photo Album :: Tycho's Supernova Remnant :: March 24, 2011 This image comes from a very deep Chandra observation of the Tycho supernova remnant, produced by the explosion of a white dwarf star in our Galaxy. Low-energy X-rays (red) in the image show expanding debris from the supernova explosion and high ener Lunch with the Stars! Tycho's Supernova Remnant: Exploding Stars and Stripes, for lunch time reading: http://chandra.harvard.edu/photo/2011/tycho/
"06.10.2015 15:17:07" chandra.harvard.edu Before/after of supernova remnant Cassiopeia A #3dprinting with detailing from Joe DePasquale. This is on its way to Senator Harry Reid. Make your own! http://chandra.harvard.edu/resources/illustrations/3d_files.html
"05.10.2015 22:00:41" Chandra X-ray Observatory Revealing Hidden Black Holes
This multiwavelength image of the galaxy NGC 3627 contains X-rays from Chandra (blue), infrared data from Spitzer (red), and optical data from Hubble and the Very Large Tele Chandra Flashback of the Day – Revealing Hidden Black Holes
"05.10.2015 20:41:10" Glossary Term of the Day!
Parsec: The distance at which a star must lie in order that its measured parallax due to the Earth's orbit around the Sun is exactly 1 arc second, equal to 3.3 light years.
"05.10.2015 19:08:25" chandra.si.edu Chandra :: Photo Album :: Kepler's Supernova Remnant :: 06 Oct 04 NASA's three Great Observatories -- the Hubble Space Telescope, the Spitzer Space Telescope, and the Chandra X-ray Observatory -- joined forces to probe the expanding remains of a supernova. Now known as Kepler's supernova remnant, this object was fi Question of the Day!
The image you have posted of the Kepler SNR is said to be 14ly in diameter and expanding at 2 million meters per second. Is the rate of expansion slowing or has it slowed since the SN event? Is the rate constant since the event?
"05.10.2015 17:50:53" chandra.si.edu Chandra :: Photo Album :: PSR J0357+3205 :: July 13, 2011 A spinning neutron star is tied to a mysterious tail - or so it seems. Astronomers using NASA's Chandra X-ray Observatory have found that this pulsar, known as PSR J0357+3205 (or PSR J0357 for short), apparently has a long, X-ray bright tail streamin Lunch with the Stars! PSR J0357+3205: A Pulsar and its Mysterious Tail, for lunch time reading: http://chandra.si.edu/photo/2011/psrj0357/
"05.10.2015 16:28:42" lightexhibit.org Light: Shadows Of Antelope Canyon Shadows are a familiar experience for most of us. Any time an object blocks the light from another source, it forms a shadow. In this photograph, we see shadows on the spectacular walls of Antelope Canyon in Arizona as sunlight streams through an ope LIGHT: Beyond the Bulb – Image of the Day!
Shadows of Antelope Canyon
Shadows can happen with different types of light from radio waves up to more energetic X-rays and gamma rays.
Image Credit: J L Spaulding
"05.10.2015 15:13:44" chandra.si.edu Chandra :: Field Guide to X-ray Astronomy :: Another Form of Light A new form of radiation was discovered in 1895 by Wilhelm Roentgen, a German physicist. He called it X-radiation to denote its unknown nature. This mysterious radiation had the ability to pass through many materials that absorb visible light. X-rays Discovered in 1895, X-rays are another form of light. Look at the electromagnetic spectrum, learn how X-rays are produced, and compare medical X-rays and X-ray Astronomy.
"02.10.2015 22:08:47" Chandra X-ray Observatory Peering Into The Heart of Darkness
This Chandra image of Sgr A* and the region around it was based on almost two weeks of observing time. A theoretical model based on these deep data has been produced to help Chandra Flashback of the Day – Peering Into The Heart of Darkness
"02.10.2015 21:24:47" Glossary Term of the Day!
Parallax: The apparent motion of a relatively close object with respect to a more distant background as the location of the observer changes.
"02.10.2015 20:21:56" Chandra X-ray Observatory Cosmic Timeline Illustration
The nature of dark matter is unknown. A substantial body of evidence indicates that it cannot be baryonic matter, i.e., protons and neutrons. The favored model is that dark matter is mostly composed of exotic particles f Question of the Day!
I need to find out what objects are in space further than 131,700,000,000 light years.
There are undoubtedly many objects at a distance greater than 131 billion light years, but we can't know about them, if the Big Bang
"02.10.2015 18:42:08" lightexhibit.org Light: Sandstone Mesas Sunlight is made up of a mixture of many wavelengths of light. Each visible wavelength is perceived as a different color, with violet having the shortest wavelength, and red the longest. When sunlight enters a raindrop, its path is bent; the light is LIGHT: Beyond the Bulb – Image of the Day!
Sandstone Mesas With Rainbow
This rainbow is caused by light being refracted (bent) when entering a droplet of water, then reflected inside on the back of the droplet and refracted again when leaving it.
"02.10.2015 16:38:51" chandra.harvard.edu Chandra :: Photo Album :: M83 :: April 30, 2012 NASA's Chandra X-ray Observatory has discovered an extraordinary outburst by a black hole in the spiral galaxy M83, located about 15 million light years from Earth. Using Chandra, astronomers found a new ultraluminous X-ray source (ULX), objects that Lunch with the Stars! M83: A Remarkable Outburst from an Old Black Hole, for lunch time reading: http://chandra.harvard.edu/photo/2012/m83/
"02.10.2015 15:18:42" chandra.harvard.edu A Fresh Perspective on an Extraordinary Cluster of Galaxies | ChandraBlog | Fresh Chandra News Galaxy clusters are often described by superlatives. After all, they are huge conglomerations of galaxies, hot gas, and dark matter and represent the largest structures in the Universe held together by gravity. Check out our latest blog for more information on our latest release!
"01.10.2015 22:15:43" Chandra X-ray Observatory Puppis A: An X-ray Tapestry
The destructive results of a powerful supernova explosion are seen in a delicate tapestry of X-ray light in this new image. The remnant is called Puppis A, which could have been Chandra Flashback of the Day – Puppis A: An X-ray Tapestry
"01.10.2015 21:17:06" Glossary Term of the Day!
Pair production: Process in which a very high-energy photon interacts with another photon or a strong magnetic field to give rise to a particle-anti-particle pair.
"01.10.2015 20:01:45" ras.ucalgary.ca Question of the Day!
At what distance, position and angle are we from the galactic plane?
We're actually sitting in the galactic plane, orbiting at a radius of about 8 kiloparsecs, or 26 light years from the center of the galaxy.
For a nic
"01.10.2015 18:57:40" lightexhibit.org Light: Lake Reflections Most objects do not emit light. Rather, they reflect it from a source like a light bulb or sunlight. This common process allows us to see these things that are all around us. In fact, one of the fundamental laws of the physics of light involves refle LIGHT: Beyond the Bulb – Image of the Day!
Reflection consists of two rays: an incoming or 'incident' ray and an outgoing or 'reflected' ray.
Image Credit: Prabhu B Doss
#IYL2015 #LBTB iyl2
"01.10.2015 17:05:49" chandra.si.edu Chandra :: Photo Album :: G327.1-1.1 :: October 5, 2010 G327.1-1.1 is the aftermath of a massive star that exploded as a supernova in the Milky Way galaxy. A highly magnetic, rapidly spinning neutron star called a pulsar was left behind after the explosion and is producing a wind of relativistic particles Lunch with the Stars! G327.1-1.1: Pushing the Envelope, for lunch time reading: http://chandra.si.edu/photo/2010/g327/
"01.10.2015 15:31:57" Tour of Phoenix Cluster Tour of Phoenix Cluster
This galaxy cluster, which was found about 5.7 billion light years from Earth, shattered several important astronomical records.
Learn more: http://chandra.si.edu/photo/2015/phoenix/
Check out more Chandra podcasts: http://
"30.09.2015 22:05:02" Chandra X-ray Observatory A Pulsar and its Mysterious Tail
Astronomers using Chandra have found evidence for a possible long, X- ray bright tail extending from the pulsar called PSR J0357+3205 (or PSR J0357 for short). The Chandra Flashback of the Day – A Pulsar and its Mysterious Tail
"30.09.2015 21:02:57" Glossary Term of the Day!
Open universe: Geometry that the universe would have if the density of matter were less than the critical value. In an open universe there is not enough matter to halt the expansion of the universe. An open universe is infin
"30.09.2015 19:52:18" Chandra X-ray Observatory The electromagnetic thermometer scale featuring CGRO, Chandra, Hubble, Spitzer & ALMA.
X-rays are associated with high temperatures of about 10 million to 100 million K. Image (A) features multiwavelength images of the Milky Way. Gamma Ray: CGRO/EGR Question of the Day!
Do you think that in the future the X-Ray telescope will replace the Hubble telescope?
No, the two telescopes are complementary, not competitive. Hubble looks at optical or visible light from objects that typically have
"30.09.2015 18:09:54" lightexhibit.org Light: 22-Degree Halo When sunlight passes through ice crystals in cirrus clouds in the Earth's atmosphere, the refraction of sunlight by the ice crystals can create an optical phenomenon known as a 22-degree halo. Most of the halos appear as bright white rings, but somet LIGHT: Beyond the Bulb – Image of the Day!
The 22-degree halo happens most frequently around the Sun, but can also occur with the Moon (which is also called the "Moon ring" or "winter halo.)
"30.09.2015 16:41:18" chandra.harvard.edu Chandra :: Photo Album :: Tycho's Supernova Remnant :: April 26, 2011 This new image of Tycho's supernova remnant, dubbed Tycho for short, contains striking new evidence for what triggered the original supernova explosion, as seen from Earth in 1572. Tycho was formed by a Type Ia supernova, a category of stellar explos Lunch with the Stars! Tycho's Supernova Remnant: NASA'S Chandra Finds New Evidence on Origin of Supernovas, for lunch time reading: http://chandra.harvard.edu/photo/2011/tycho2/
"30.09.2015 15:20:27" Groups & Clusters of Galaxies Phoenix Cluster: A Fresh Perspective on an Extraordinary Cluster of Galaxies
New observations of the galaxy cluster SPT-CLJ2344-4243 at X-ray, ultraviolet, and optical wavelengths are helping astronomers bet
"29.09.2015 22:02:24" Chandra X-ray Observatory Centaurus A: Jet Power and Black Hole Assortment Revealed
http://chandra.harvard.edu/photo/2008/cena/ Chandra Flashback of the Day – Centaurus A: Jet Power and Black Hole Assortment Revealed
"29.09.2015 21:31:28" chandra.si.edu Trying to Understand the Milky Way's Black Hole | ChandraBlog | Fresh Chandra News Dr. Gabriele Ponti is the Marie Sklodowska-Curie EU Research Fellow at the Max Planck Institute for Extraterrestrial Physics in Germany. Prior to that, he was a post-doctoral fellow at the University of Southampton in the UK, after spending a year at Official Chandra blog written by Dr. Gabriele Ponti.
"29.09.2015 20:21:49" lightexhibit.org Light: Sun Dogs and Halo Sun dogs belong to a large class of atmospheric phenomena caused by the bending of sunlight by small ice crystals in the air. The... LIGHT: Beyond the Bulb – Image of the Day!
Sun Dogs And Halo Around Setting Sun
The term "sun dog" refers to a pair of bright lights seen on either side of the Sun, typically when it is setting.
"29.09.2015 18:26:52" chandra.si.edu Chandra :: Photo Album :: NGC 1068 :: 9 Jul 03 This composite X-ray (blue and green) and optical (red) image of the active galaxy, NGC 1068, shows gas blowing away in a high-speed wind from the vicinity of a central supermassive black hole. Regions of intense star formation in the inner spiral ar Lunch with the Stars! NGC 1068: Wind and Reflections from a Black Hole, for lunch time reading: http://chandra.si.edu/photo/2003/ngc1068/
"29.09.2015 16:47:58" universetoday.com Carnival of Space #425 Welcome, come in to the 425th Carnival of Space! The carnival is a community of space science and astronomy writers and bloggers, who submit their best work each week for your benefit. I’m S… Our local black hole, lunar ridges, the #Supermoon, Pluto hazes & more #astronews
"29.09.2015 15:16:40" Timeline Photos Congratulations on your new appointment as Principal Investigator of Chandra's High Resolution Camera, Dr. Kraft!
"28.09.2015 22:05:15" Chandra X-ray Observatory NGC 4194: A Black Hole in Medusa's Hair
http://chandra.harvard.edu/photo/2009/medusa/ Chandra Flashback of the Day – NGC 4194: A Black Hole in Medusa's Hair
"28.09.2015 21:11:19" Glossary Term of the Day!
Open Cluster: Loosely bound collection of tens to hundreds of stars, a few parsecs across, generally found in the plane of the Milky Way.
"28.09.2015 19:55:31" chandra.harvard.edu Chandra :: Photo Album :: Galaxy Clusters and Dark Energy :: 18 May 04 Chandra images of multimillion degree Celsius gas in galaxy clusters have provided astronomers with a powerful new method to probe the mass and energy content of the universe.A recent study of 26 clusters of galaxies confirms that the expansion of th Question of the Day!
What if we viewed dark matter as easily disrupted and smooth flowing through the universe? Could it be possible that it could collide with another cloud of dark matter or become disrupted by some type of gravitational pull, if we
"28.09.2015 18:24:55" lightexhibit.org Light: Rainbow Lands On Cow Sunlight is made up of a mixture of many wavelengths of light. Each visible wavelength is perceived as a different color, with violet having the shortest wavelength, and red the longest. When sunlight enters a raindrop, its path is bent; the light is LIGHT: Beyond the Bulb – Image of the Day!
Rainbow Lands On Cow
This rainbow is caused by light being refracted (bent) when entering a droplet of water, then reflected inside on the back of the droplet and refracted again when leaving it.
"28.09.2015 16:54:58" chandra.harvard.edu Chandra :: Photo Album :: Abell 2052 :: December 13, 2011 Like wine in a glass, vast clouds of hot gas are sloshing back and forth in Abell 2052, a galaxy cluster located about 480 million light years from Earth. X-ray data (blue) from NASA's Chandra X-ray Observatory shows the hot gas in this dynamic syste Lunch with the Stars! Abell 2052: A Galaxy Cluster Gets Sloshed, for lunch time reading: http://chandra.harvard.edu/photo/2011/a2052/
"28.09.2015 15:45:04" Tour of Sgr A* Tour of Sgr A* (09-28-2015)
At the heart of the Milky Way galaxy, there is a supermassive black hole that has the mass equivalent of some four million Suns.
Learn more: http://chandra.si.edu/photo/2015/sgra2/
Check out more Chandra podcasts: http:/
"25.09.2015 21:49:17" Chandra X-ray Observatory NGC 7793: Black Hole Blows Big Bubble
Combining observations made with ESO’s Very Large Telescope and NASA’s Chandra X-ray telescope, astronomers have uncovered the most powerful pair of jets ever seen from a stellar black hole.
http://chandra.si. Chandra Flashback of the Day – NGC 7793: Black Hole Blows Big Bubble
Combining observations made with ESO’s Very Large Telescope and NASA’s Chandra X-ray telescope, astronomers have uncovered the most powerful pair of jets ever seen from a stellar b
"25.09.2015 20:47:42" Glossary Term of the Day!
Opacity: A quantity that measures a material's ability to block electromagnetic radiation. Opacity is the opposite to transparency.
"25.09.2015 19:13:31" Chandra X-ray Observatory Winds can move particles from one place to another. A wind can occur wherever a difference in pressure between two locations is not balanced by some other force such as gravity. On Earth, winds can blow briefly during a storm, and over long time scal What does a dandelion, a comet, and a supernova have in common? A: Wind! Learn more in this infographic. Larger version: http://chandra.si.edu/resources/illustrations/infographics.html
"25.09.2015 17:51:59" chandra.si.edu Chandra :: Photo Album :: Galactic Center X-ray Binaries :: 10 Jan 05 These images are part of an ongoing Chandra program that monitors a region around the Milky Way's supermassive black hole, Sagittarius A* (Sgr A*). Four bright, variable X-ray sources (circles) were discovered within 3 light years of Sgr A* (the brig Lunch with the Stars! Galactic Center X-ray Binaries: Chandra Finds a Black Hole Swarm Near Milky Way Center, for lunch time reading: http://chandra.si.edu/photo/2005/gctr_bin/
"25.09.2015 16:47:51" lightexhibit.org Light: Blue Skies Our clear skies on Earth are blue because the atoms and molecules in the planet's atmosphere scatter the blue part of sunlight the most, making it appear as if it is coming from all directions. The face of the Moon is visible too because of light fro LIGHT: Beyond the Bulb – Image of the Day!
As sunlight strikes the lunar surface, it is reflected, making this otherwise dark world visible from Earth.
Image Credit: © Tomas Castelazo, www.tomascas
"25.09.2015 15:25:09" Photos from Chandra X-ray Observatory's post Our very own Chandra team member, KImberly Arcand, had the opportunity to introduce Neil deGrasse Tyson at the Providence Performing Arts Center last night. Go Kim!
"24.09.2015 22:07:35" Chandra X-ray Observatory Lyman Alpha Blobs: Galaxies Coming of Age in Cosmic Blobs
http://chandra.harvard.edu/photo/2009/labs/ Chandra Flashback of the Day – Lyman Alpha Blobs: Galaxies Coming of Age in Cosmic Blobs
"24.09.2015 20:52:20" Glossary Term of the Day!
Omega: Symbol used to denote the ratio of the mass density of the universe to the critical mass density.
"24.09.2015 19:47:17" Chandra X-ray Observatory Illustration of Black Hole with Accretion Disk and Torus
An artist's conception shows a black hole surrounded by a disk of hot gas, and a large doughnut or torus of cooler gas and dust. The light blue ring on Question of the Day!
Are jets from Black Holes stranger than the super hot solar atmosphere? How do cosmic winds interact with the fields from forming Black Holes? Wouldn't they light up like dust over a laser beam?
The jets do interact with
"24.09.2015 18:27:04" lightexhibit.org Light: Bluebells When light reaches a green plant, many different reactions take place to store the energy from light into sugar (aka, carbohydrate) molecules. The plant doesn't use all of the light that it receives. Plants absorb mainly the red and blue parts of vis LIGHT: Beyond the Bulb – Image of the Day!
The green leaves and grasses in this photograph, found amid this field of bluebell flowers, reflect the green range of light, whereas the bluebells reflect blue light.
"24.09.2015 17:18:42" chandra.harvard.edu Chandra :: Photo Album :: M87 :: August 18, 2010 This image shows the eruption of a galactic "super-volcano" in the massive galaxy M87, as witnessed by NASA's Chandra X-ray Observatory and NSF's Very Large Array (VLA). At a distance of about 50 million light years, M87 is relatively close to Earth Lunch with the Stars! M87: Galactic Super-volcano in Action, for lunch time reading: http://chandra.harvard.edu/photo/2010/m87/
"24.09.2015 16:18:53" Chandra Sketches: Highlights of Light Chandra Sketches: Highlights of Light (09-24-2015)
Light comes in different forms. The light that we see with our eyes is just a fraction of all light.
Get to know light even more at "LIGHT: Beyond the Bulb": http://lightexhibit.org/
Check out more
"24.09.2015 15:19:52" Timeline Photos Want to know how we process our data? This paper describes some of the techniques.
"23.09.2015 22:16:11" Chandra X-ray Observatory NGC 6543: A Planetary Nebula Gallery
This gallery shows four planetary nebulas from the first systematic survey of such objects in the solar neighborhood made with NASA's Chandra X-ray Observatory. The plan Chandra Flashback of the Day – NGC 6543: A Planetary Nebula Gallery
"23.09.2015 20:30:23" chandra.si.edu Chandra :: Photo Album :: 3C321 :: 17 December 07 This composite image shows the jet from a black hole at the center of a galaxy striking the edge of another galaxy, the first time such an interaction has been found. In the image, data from several wavelengths have been combined. X-rays from Chandra Question of the Day!
What sort of damage to the atmosphere of a planet could be expected from a direct hit by the 3c321 jet? Is the effect like being hit by a fire from outer space?
It's not certain wh
"23.09.2015 19:10:24" lightexhibit.org Light: Sunflowers Perhaps one of the most remarkable phenomena on Earth is photosynthesis. This is the process that allows plants, bacteria, and algae to convert light from our Sun into chemical energy. LIGHT: Beyond the Bulb – Image of the Day!
Photosynthesis uses light to transform carbon dioxide and water into carbohydrates and oxygen. Since all animal life, including humans, eats plants–either directly or indirectly through animals–an
"23.09.2015 17:50:51" Black Holes Milky Way's Black Hole Shows Signs of Increased Chatter
The artist's illustrations in the top panels represent a possible explanation for a recent increase in X-ray flares from Sgr A* seen by three telesc
"23.09.2015 16:36:26" chandra.harvard.edu Chandra :: Photo Album :: CID 1711 :: October 25, 2011 Astronomers have used a large survey to test a prediction that close encounters between galaxies can trigger the rapid growth of supermassive black holes. Key to this work was Chandra's unique ability to pinpoint actively growing black holes through Lunch with the Stars! CID 1711 and CID 3083: Close Encounters of the Galactic Kind, for lunch time reading: http://chandra.harvard.edu/photo/2011/cid/
"23.09.2015 15:29:25" Chandra X-ray Observatory Wakeup calls are a long-standing tradition of the NASA program. Each day during the mission that launched Chandra, flight controllers in the Mission Control Center greeted the crew with an appropriate musical interlude. Listen to them here: http://ch Have trouble waking up in the morning? Too bad you didn't receive these awesome wake up calls that the crew from the mission that launched Chandra heard each morning.
Image Credit: Eddie Mallin, Wiki
"22.09.2015 22:10:31" Chandra X-ray Observatory Flame Nebula: NASA's Chandra Delivers New Insight into Formation of Star Clusters
Astronomers have studied two star clusters to gain insight on how clusters of stars like our Sun form. This composite imag Chandra Flashback of the Day – Flame Nebula: NASA's Chandra Delivers New Insight into Formation of Star Clusters
"22.09.2015 20:22:31" Glossary Term of the Day!
Nucleus: Dense, central region of an atom, containing both protons and neutrons, and orbited by one or more electrons.
"22.09.2015 19:04:22" chandra.harvard.edu Chandra :: Chronicles :: The Wonderful (And Fearful) Dark Side :: October 22, 2003 Question of the Day!
Could you please tell me which is more more common in our Galaxy: white dwarfs or black holes? Why?
The answer is that we don't know. Certainly when we look at our galaxy we see mostly stars, many many stars. So at first
"22.09.2015 17:30:40" lightexhibit.org Light: Monarch Butterflies Every year, monarch butterflies migrate from the same tree in the Eastern part of the United States to the same tree in California or Mexico. This is in spite of the fact that, by the time this journey is complete, this is not the same butterfly. Rat LIGHT: Beyond the Bulb – Image of the Day!
Scientists think that the monarch butterflies know their migration route based on a combination of the position of the Sun in the sky, as well as a special photoreceptor in their antennae
"22.09.2015 16:26:58" chandra.harvard.edu Chandra :: Photo Album :: M31 :: June 12, 2013 Data from NASA's Chandra X-ray Observatory have been used to discover 26 black hole candidates in the Milky Way's galactic neighbor, Andromeda, as described in our latest press release. This is the largest number of possible black holes found in a ga Lunch with the Stars! M31: Black Hole Bonanza Turns up in Galaxy Next Door, for lunch time reading: http://chandra.harvard.edu/photo/2013/m31/
"22.09.2015 15:18:02" Chandra X-ray Observatory Astronomy Fact #15
NASA's Chandra X-ray Observatory, which was launched and deployed by Space Shuttle Columbia on July 23, 1999, is the most sophisticated X-ray observatory built to date. This mission was the first NASA shuttle mission to be command Did you know this? Get to know more about Commander Collins right here: http://chandra.harvard.edu/press/bios/collins_bio.html
"21.09.2015 22:00:46" Chandra X-ray Observatory Cartwheel Galaxy: Astronomers Do Flips Over Cartwheel Galaxy
Credit:Composite: NASA/JPL/Caltech/P.Appleton et al. X-ray: NASA/CXC/A.Wolter & G.Trinchieri et al. Chandra Flashback of the Day – Astronomers Do Flips Over Cartwheel Galaxy
"21.09.2015 20:37:12" Timeline Photos Question of the Day!
Many pictures of spiral galaxies show a very obvious bulge, a bright, central concentration of stars. Since we can see bright bulges in distant galaxies, why don't we see a bright one at the center of our own?
"21.09.2015 19:10:06" chandra.si.edu chandra.si.edu Lunch with the Stars! SNR 0509-67.5: Supernova Bubble Resembles Holiday Ornament, for lunch time reading: http://chandra.si.edu/photo/2010/snr0509/
"21.09.2015 17:44:38" lightexhibit.org Light: Flight Path Of Fireflies Fireflies produce light when an organic compound in their abdomen, called luciferin, interacts with oxygen from the air. When this happens, light with a wavelength of between 510 and 670 nanometers—the color of pale yellow to reddish green—is generat LIGHT: Beyond the Bulb – Image of the Day!
Flight Path of Fireflies
When a living organism produces its own light, scientists call it "bioluminescence." Fireflies, also called lightning bugs, are some of the best-known examples of this process.
"21.09.2015 16:29:32" photostospace.com Carnival of Space No. 424 Carnival of Space No. 424 Sep 20 2015 Welcome to the Carnival of Space, Episode 424. Each week the Carnival brings you the latest and greatest space science articles to be found on this side of a Venusian sunset. Kick back, pull up a frothy beverage Pluto glaciers & haze, New Horizons/new data, Enceladus' ocean & robotics #astronews
"21.09.2015 15:20:24" chandra.si.edu Chandra :: Field Guide to X-ray Sources :: Cosmology/Deep Fields/X-ray Background Learn About:Cosmology Chandra Images: Cosmology/Deep Fields/X-ray Background Printable Field Guide: Cosmology/Deep Fields/X-ray Background The sky as observed in X-rays is not dark, but gives off a glow thought to be from many distant sources.
"18.09.2015 22:00:44" Chandra X-ray Observatory Peering Into The Heart of Darkness
This Chandra image of Sgr A* and the region around it was based on almost two weeks of observing time. A theoretical model based on these deep data has been produced to help Chandra Flashback of the Day – Peering Into The Heart of Darkness
"18.09.2015 20:54:56" Glossary Term of the Day!
Nucleosynthesis: The building up of heavy elements from lighter ones by nuclear fusion.
"18.09.2015 19:15:12" Chandra X-ray Observatory "We are star stuff harvesting sunlight." - Carl Sagan
Planetary Nebula Gallery: Planetary nebula located less than 5000 light years from Earth.
The planetary nebula shown here is Yes we are Mr. Sagan!
Learn more about this image of the Cat's Eye Nebula right here:http://chandra.si.edu/resources/illustrations/pins/ngc6543_pin.html
"18.09.2015 17:55:15" chandra.si.edu Chandra :: Photo Album :: M86 (NGC 4406) :: 01 Oct 03 This composite X-ray (blue)/optical (orange) image of M86 shows gas being swept out of the galaxy to form a long tail more than 200,000 light years in length. Located in the Virgo galaxy cluster, this enormous elliptical galaxy is moving at about 3 m Lunch with the Stars! M86: Cluster's Gain is Galaxy's Loss, for lunch time reading: http://chandra.si.edu/photo/2003/m86/
"18.09.2015 16:47:48" lightexhibit.org Light: Bioluminescence in the Gippsland Lakes Bioluminescence is light produced by a chemical reaction inside a living organism. There are many bioluminescent life forms on land, including different kinds of fungus and insects. Most bioluminescence, however, occurs in water, particularly in in t LIGHT: Beyond the Bulb – Image of the Day!
Here we see the bioluminescent glow of marine plankton in the Gippsland Lakes in southeastern Australia.
Image Credit: Phil Hart
#IYL2015 #LBTB Ligh
"18.09.2015 15:09:41" chandra.si.edu Chandra :: Field Guide to X-ray Sources :: Normal Galaxies Galaxies are gravitationally-bound systems of stars, gas, dust and dark matter. A typical large spiral galaxy such as our home galaxy, the Milky Way, consists of hundreds of billions of stars, enough gas and dust to make billions more stars, and at l Normal Galaxies: Large gravitationally bound systems consisting of hundreds of billions of stars, enough gas and dust to make billions more stars, and dark matter.
"17.09.2015 22:12:34" Chandra X-ray Observatory W49B: Rare Explosion May Have Created Our Galaxy's Youngest Black Hole
This highly distorted supernova remnant may contain the most recent black hole formed in the Milky Way galaxy. The composite image combine Chandra Flashback of the Day – W49B: Rare Explosion May Have Created Our Galaxy's Youngest Black Hole
"17.09.2015 21:03:14" Glossary Term of the Day!
Nuclear fusion: A nuclear process that releases energy when lightweight nuclei combine to form heavy-weight nuclei.
"17.09.2015 19:03:18" Chandra X-ray Observatory Cosmic Timeline Illustration
The nature of dark matter is unknown. A substantial body of evidence indicates that it cannot be baryonic matter, i.e., protons and neutrons. The favored model is that dark matter is mostly composed of exotic particles f Question of the Day!
Is the universe expanding at about 65 miles per second?
You are probably referring to the recent determinations of that the Hubble constant, which gives the rate of expansion of the universe, is 65. However, the units ar
"17.09.2015 17:49:34" lightexhibit.org Light: Blueline Snapper This spectacularly colorful school of fish contains blueline snappers, a species native to certain parts of the Indian Ocean. LIGHT: Beyond the Bulb – Image of the Day!
The fish themselves do not possess the color we see in this image. Rather, the color is in the light that shines onto them from the Sun above.
"17.09.2015 16:46:56" chandra.harvard.edu Chandra :: Photo Album :: Cassiopeia A :: February 23, 2011 This composite image shows a beautiful X-ray and optical view of Cassiopeia A (Cas A), a supernova remnant located in our Galaxy about 11,000 light years away. These are the remains of a massive star that exploded about 330 years ago, as measured in Lunch with the Stars! Cassiopeia A: NASA'S Chandra Finds Superfluid in Neutron Star's Core, for lunch time reading: http://chandra.harvard.edu/photo/2011/casa/
"17.09.2015 15:31:50" chandra.harvard.edu Interning with Chandra | ChandraBlog | Fresh Chandra News We welcome Alicia Goldstein, who was an intern at the Chandra X-ray Center this past summer, as our guest blogger. Ms. Goldstein, originally from Ellicott City, MD, is currently a senior at the University of Maryland, Baltimore County where she major Meet Chandra intern Alicia Goldstein!
"16.09.2015 22:11:26" Chandra X-ray Observatory PKS 0745: From Super to Ultra: Just How Big Can Black Holes Get?
The black hole at the center of this galaxy is part of a survey of 18 of the biggest known black holes in the universe. This large el Chandra Flashback of the Day – PKS 0745: From Super to Ultra: Just How Big Can Black Holes Get?
"16.09.2015 21:19:11" Glossary Term of the Day!
Nuclear force: The force that binds protons and neutrons within atomic nuclei, and which is effective only at distances less than about 10-13 centimeter.
"16.09.2015 19:06:13" Chandra X-ray Observatory Galactic Center: NASA's Great Observatories Examine the Galactic Center Region
http://chandra.harvard.edu/photo/2009/galactic/ Question of the Day!
In my local newspaper an article from the Los Angeles Times has the following quote, "...the center of the galaxy..is a violent place where stars are forming, dying and exploding at furious rates and being buffeted by supernova s
"16.09.2015 17:36:16" lightexhibit.org Light: Micrograph Of Algae The technique used to enhance the contrast in this photomicrograph is called "darkfield." To do this, a photographer excludes some of the light that enters the field of view so that very little light falls on anything except the specimen. This makes LIGHT: Beyond the Bulb – Image of the Day!
Micrograph of Algae and Moss
This photomicrograph—an image taken through a microscope and captured with a camera—features an up close look at green algae and moss.
"16.09.2015 16:31:48" chandra.harvard.edu Chandra :: Photo Album :: J075141 :: December 17, 2013 In the middle of the twentieth century, an unusual star was spotted in the constellation of Canes Venatici (Latin for "hunting dogs"). Years later, astronomers determined that this object, dubbed AM Canum Venaticorum (or, AM CVn, for short), was, in Lunch with the Stars! J075141 and J174140: Doubling Down With Rare White Dwarf Systems, for lunch time reading: http://chandra.harvard.edu/photo/2013/amcvn/
"16.09.2015 15:23:51" chandra.si.edu Chandra :: Field Guide to X-ray Astronomy :: Chemistry and the Universe Chemistry, the study of the intricate dances and bondings of low-energy electrons to form the molecules that make up the world we live in, may seem far removed from the thermonuclear heat in the interiors of stars and the awesome power of supernovas. The familiar periodic table of elements—found in virtually every chemistry class—has been adapted to show how astronomers see the chemical Universe.
"15.09.2015 22:21:46" Chandra X-ray Observatory Circinus X-1: X-ray Echoes Pinpoint Location of Distant Flaring Neutron Star
Chandra data of Circinus X-1 reveal a set of four rings that appear as circles around the neutron star, providing a rare opportunit Chandra Flashback of the Day – Circinus X-1: X-ray Echoes Pinpoint Location of Distant Flaring Neutron Star
"15.09.2015 21:33:03" Glossary Term of the Day!
Nova: A star that suddenly increases in brightness, often by a factor of as much as 10,000, then slowly fades back to its original luminosity. A nova is the result of an explosion on the surface of a white dwarf star, caused
"15.09.2015 20:42:09" Question of the Day!
An article I read says a pulsar is 1,615 years old - the Chinese saw something 1,600 years ago...and astronomers say the pulsar was born in the year (Earth year) 386. But then the article states that the "1,600 year old pulsar is
"15.09.2015 18:34:47" lightexhibit.org Light: White Matter Fibers While most people are familiar with "grey matter" associated with the brain, many people may not know about white matter. This is a network, made up of nerve fibers, that connects different parts of the brain and spinal cord to one another. This imag LIGHT: Beyond the Bulb – Image of the Day!
White Matter Fibers
This image was made using diffusion spectrum imaging (DSI), which is a variant of magnetic resonance imaging. In DSI, radio waves from water molecules energized by a magnetic field map th
"15.09.2015 17:24:02" chandra.harvard.edu Chandra :: Photo Album :: Crab Nebula :: May 11, 2011 A new movie from NASA's Chandra X-ray Observatory shows a sequence of Chandra images of the Crab Nebula, taken over an interval of seven months. Dramatic variations are seen, including the expansion of a ring of X-ray emission around the pulsar (whit Lunch with the Stars! The Crab in Action & The Case of The Dog That Did Not Bark, for lunch time reading: http://chandra.harvard.edu/photo/2011/crab/
"15.09.2015 16:06:08" Chandra X-ray Observatory It's my birthday! But I'm the luckiest 16 year old of them all because I got my driver's license right when I was launched.
Come celebrate with me here: http://chandra.si.edu/photo/2015/16th/ A little tip about me. I hate to brag but...
Check out some more of my accomplishments right here: http://chandra.si.edu/16th/
"15.09.2015 15:19:01" nextbigfuture.com Next Big Future: Carnival of Space 423 Early Martian atmosphere, carbonate mineral, transNeptunian object +more #astronews
"14.09.2015 22:11:09" Chandra X-ray Observatory 3c321: Black Hole Fires at Neighboring Galaxy
http://chandra.harvard.edu/photo/2007/3c321/ Chandra Flashback of the Day – 3c321: Black Hole Fires at Neighboring Galaxy
"14.09.2015 20:49:12" Glossary Term of the Day!
Non-thermal radiation: Radiation released by virtue of a fast-moving charged particle (such as an electron) interacting with a magnetic force field or other particles; this process has nothing to do with heat.
"14.09.2015 19:38:14" chandra.harvard.edu Chandra :: Field Guide to X-ray Astronomy :: Dark Matter Mystery Observations of the rotational speed of spiral galaxies, the confinement of hot gas in galaxies and clusters of galaxies, the random motions of galaxies in clusters, the gravitational lensing of background objects, and the observed fluctuations in th Question of the Day!
Is it possible that dark matter is not dark at all? According to Einstein's theory of relativity, energy has mass. Although this is a special theory limited to bodies moving in the absence of a gravitational field, the idea that
"14.09.2015 18:11:47" lightexhibit.org Light: Nerve Cells of Eye's Retina The retina of your eye consists of many interconnected layers of nerve cells, some of which are sensitive to light. Most people have heard of the two types of photoreceptors used to form images: the rod and cone cells. Recently, a third class of phot LIGHT: Beyond the Bulb – Image of the Day!
Nerve Cells of Eye's Retina
In this image the cone cells form the top (green) layer and the ganglion cells are at the bottom.
Image Credit: Wei Li, National Eye Ins
"14.09.2015 17:08:32" chandra.harvard.edu Chandra :: Photo Album :: M31 :: February 17, 2010 This composite image of M31 (also known as the Andromeda galaxy) shows X-ray data from NASA's Chandra X-ray Observatory in gold, optical data from the Digitized Sky Survey in light blue and infrared data from the Spitzer Space Telescope in red. The C Lunch with the Stars! M31: NASA's Chandra Reveals Origin of Key Cosmic Explosions, for lunch time reading: http://chandra.harvard.edu/photo/2010/type1a/
"14.09.2015 15:21:27" chandra.si.edu Chandra :: Field Guide to X-ray Astronomy :: Galactic Navigation Imagine the Earth in its place in the Milky Way. You are standing on the Earth looking out into space. The night sky arcs over the planet. You are in awe of the vastness of space. You try to identify the constellations, and then you wonder, "Where ar Do you ever question, "Where are all those stars in the sky really located? How far are they from me?" Well then, take a tour of the Galactic Coordinate System.
"11.09.2015 22:36:07" Chandra X-ray Observatory Abell 1689: A Galaxy Cluster Makes Its Mark - http://chandra.harvard.edu/photo/2006/1e0657/index.html Chandra Flashback of the Day – Abell 1689: A Galaxy Cluster Makes Its Mark - http://chandra.harvard.edu/photo/2006/1e0657/index.html
"11.09.2015 20:49:36" Glossary Term of the Day!
Newtonian mechanics: The basic laws of motion, postulated by Newton, which are sufficient to explain and quantify virtually all of the complex dynamical system behavior found on Earth and elsewhere in the universe.
"11.09.2015 19:26:58" Chandra X-ray Observatory Stellar black holes, mid-mass black holes, and supermassive black holes. Question of the Day!
What ultimately happens to black holes? Are they forever, or do they eventually transition into some other state of energy and/or matter?
According to our current knowledge, black holes will eventually evaporate by a pr
"11.09.2015 18:04:16" lightexhibit.org Light: Mouse Retina A laser scanning, or "confocal," microscope scans a sample point-by-point or line-by-line at once, assembling the pixel information to generate one image. This allows for a very high-resolution and high-contrast image in three dimensions. The image s LIGHT: Beyond the Bulb – Image of the Day!
The image shown here is from a laser scanning microscope of a mouse retina, where the cells have been stained with fluorescent dye to show different features.
"11.09.2015 16:51:49" chandra.harvard.edu Chandra :: Photo Album :: Kepler's Supernova Remnant :: March 18, 2013 This is the remnant of Kepler's supernova, the famous explosion that was discovered by Johannes Kepler in 1604. The red, green and blue colors show low, intermediate and high energy X-rays Lunch with the Stars! Kepler's Supernova Remnant: Famous Supernova Reveals Clues About Crucial Cosmic Distance Markers, for lunch time reading: http://chandra.harvard.edu/photo/2013/kepler/
"11.09.2015 15:37:50" Chandra Sketches: Our Connection With Light Chandra Sketches: Our Connection With Light (09-11-2015)
We rely on light - both natural and artificial - to brighten and power our world, but also for so much more.
Related Link: http://chandra.si.edu/resources/flash/telescopes_light.html
"10.09.2015 22:30:00" chandra.harvard.edu Chandra :: Photo Album :: Abell 3376 :: April 14, 2010 Two different teams have reported using Chandra observations of galaxy clusters to study the properties of gravity on cosmic scales and test Einstein's theory of General Relativity. Such studies are crucial for understanding the evolution of the univ Chandra Flashback of the Day – Abell 3376: Einstein's Theory Fights off Challengers http://chandra.harvard.edu/photo/2010/a3376/
"10.09.2015 21:00:02" chandra.harvard.edu Chandra :: Field Guide to X-ray Sources :: Neutron Stars/X-ray Binaries Chandra Images:Neutron Stars Printable Field Guide: Neutron Stars Questions & Answers:Supernova Remnants and Neutron Stars More: SCO X-1 Glossary Term of the Day!
Neutron star: A dense stellar remnant produced by the collapse of the core of a massive star as part of a supernova that destroys the rest of the star. Typically neutron stars are composed almost entirely of neutrons, are ab
"10.09.2015 19:30:01" Timeline Photos Question of the Day!
How do scientists detect the birth of a star?
The process of star formation is too slow for scientists to really say they can see the birth of a star, but scientists have been able to observe many of the earliest stages
"10.09.2015 18:00:00" lightexhibit.org Light: Astrocyte Brain Cells In fact, they are the most abundant cells in the human brain. In this image of astrocytes, the nucleus of each cell has been stained blue while the cytoplasm (the fluid that fills... LIGHT: Beyond the Bulb – Image of the Day!
Astrocyte Brain Cells
Astrocytes are the star-shaped cells found in spinal cord and the brain.
Image Credit: Nancy Kedersha/Science Photo Library
#IYL2015 #LBTB Lig
"10.09.2015 15:30:02" chandra.harvard.edu Chandra :: Field Guide to X-ray Sources :: Quasars & Active Galaxies Chandra Images:Quasars & Active Galaxies Printable Field Guide:Quasars & Active Galaxies Questions & Answers:Galaxies, Galaxy Clusters, AGN, and Quasars More: Quasar 3C273 If a quasar was the size of a small flashlight it would produce as much light as all the houses and businesses in the entire L.A. basin! Learn more: http://chandra.harvard.edu/xray_sources/quasars.html
"09.09.2015 22:00:00" chandra.si.edu Chandra :: Photo Album :: NGC 4258 :: 10 Apr 07 A combination of space and ground-based observations, including X-ray data from Chandra, has helped reveal the nature of the so-called anomalous arms in the spiral galaxy NGC 4258 (also known as M106). These arms have been known for decades, but thei Chandra Flashback of the Day – NGC 4258: Mysterious Arms Revealed
"09.09.2015 21:01:00" Glossary Term of the Day!
Neutron capture: The primary mechanism by which very massive nuclei are formed in the violent aftermath of a supernova. Instead of fusion of like nuclei, heavy elements are created by the addition of more and more neutrons t
"09.09.2015 20:00:00" chandra.harvard.edu Chandra :: Photo Album :: Galaxy Clusters and Dark Energy :: 18 May 04 Chandra images of multimillion degree Celsius gas in galaxy clusters have provided astronomers with a powerful new method to probe the mass and energy content of the universe.A recent study of 26 clusters of galaxies confirms that the expansion of th Question of the Day!
According to a press release, Chandra provided detailed temperature maps for the gas of galaxy clusters Abell 2390 and MS2137.3-2353 and allowed astronomers to precisely determine the masses of the clusters. Most of the mass is i
"09.09.2015 18:00:01" lightexhibit.org Light: Vorticella Protozoa are single-celled animals found throughout the world in many different habitats. The name protozoa means "first animals," and they play a key role in maintaining and balance of bacteria, algae, and other microbial life. This photograph illum LIGHT: Beyond the Bulb – Image of the Day!
This photograph illuminates one particular type of protozoa called vorticella. In this image, a technique called "dark field microscopy" was used.
"09.09.2015 16:56:30" chandra.harvard.edu Chandra :: Photo Album :: NGC 1068 :: March 3, 2010 This is a composite image of NGC 1068, one of the nearest and brightest galaxies containing a rapidly growing supermassive black hole. X-ray data from the Chandra X-ray Observatory are shown in red, optical data from the Hubble Space Telescope in gre Lunch with the Stars! NGC 1068: Winds of Change: How Black Holes May Shape Galaxies, for lunch time reading:
"09.09.2015 15:30:00" chandra.si.edu Chandra :: Field Guide to X-ray Astronomy :: History of X-Ray Astronomy Learn About:The Solar System Chandra Podcast:The Giant Planets: X-ray Secrets Revealed Chandra Special Feature:The Solar System Through Chandra's Eyes (flash) Chandra Chronicles:Solar System Objects Chandra Images:Solar System Objects Printable Field The Sun's hot outer atmosphere produces X-rays, but because it is so close (a mere 93 million miles!), it is too bright for Chandra's sensitive eyes.
"08.09.2015 22:00:01" chandra.si.edu Chandra :: Photo Album :: Coronet Cluster :: 13 Sep 07 While perhaps not quite as well known as its star formation cousin of Orion, the Corona Australis region (containing, at its heart, the Coronet Cluster) is one of the nearest and most active regions of ongoing star formation. At only about 420 light Chandra Flashback of the Day – Coronet Cluster:
A Neighbor of Star Formation http://chandra.si.edu/photo/2007/coronet/
"08.09.2015 21:30:00" Glossary Term of the Day!
Neutron: An elementary particle with roughly the same mass as a proton, but which is electrically neutral. Along with protons, neutrons form the nuclei of atoms.
"08.09.2015 20:46:00" thevenustransit.com Carnival of Space #422 Post-Pluto targets, visiting Ice Giants, ISS Transit, & more #astronews: http://www.thevenustransit.com/2015/09/carnival-of-space-422.html
"08.09.2015 19:30:00" chandra.harvard.edu Chandra :: Photo Album :: M87 Jet :: 26 Sep 01 NASA's Chandra X-ray Observatory has given astronomers their most detailed look to date at the X-ray jet blasting out of the nucleus of M87, a giant elliptical galaxy 50 million light years away in the constellation Virgo. Question of the Day!
There are numerous "objects" throughout the universe that exhibit "jets". How is it that they have tight diameters, and are directly opposite one another? It seems highly improbable (have you won the lottery lately' or twice?) th
"08.09.2015 18:27:40" lightexhibit.org Light: Volvox An optical microscope (also called a "light microscope") uses visible light and a system of lenses to magnify images of very small samples. In this image from an optical microscope, a special technique known as "differential interference contrast" th LIGHT: Beyond the Bulb – Image of the Day!
Volvox are small, colonial green algae that make up a larger spherical colony. The bright green sphere within the colony is a daughter colony, a secondary colony growing on the surface of an older one
"08.09.2015 16:55:58" chandra.harvard.edu Chandra :: Photo Album :: NGC 4151 :: March 10, 2011 This composite image shows the central region of the spiral galaxy NGC 4151, dubbed the "Eye of Sauron" by astronomers for its similarity to the eye of the malevolent character in "The Lord of the Rings". In the "pupil" of the eye, X-rays (blue) from Lunch with the Stars! NGC 4151: An Active Black Hole in the "Eye of Sauron", for lunch time reading: http://chandra.harvard.edu/photo/2011/n4151/
"08.09.2015 15:41:49" chandra.si.edu Chandra :: Field Guide to X-ray Astronomy :: X-Ray Absorption Absorption by the Earth's atmosphere restricts ground-based observations to radio, near infrared, and visible wavelengths. X-rays are absorbed high above the Earth in the following way: What happens when an X-ray is absorbed in the atmosphere? How do X-ray telescopes in orbit above the Earth's atmosphere collect X-rays? Answers to these questions and more right here: http://chandra.si.edu/xray_astro/absorption.html
"07.09.2015 23:00:00" chandra.si.edu Chandra :: Photo Album :: N132D :: 04 Oct 05 This beautiful image shows a glowing horseshoe-shaped cloud of hot gas against a backdrop of thousands of stars in the Large Magellanic Cloud, a nearby galaxy. Observations with Chandra (X-ray/blue) and Hubble (optical/pink & purple) were used to mak Chandra Flashback of the Day – N132D: NASA Space Observatories Glimpse Faint Afterglow of Nearby Stellar Explosion http://chandra.si.edu/photo/2005/n132d/
"07.09.2015 22:00:00" Glossary Term of the Day!
Neutrino oscillations: Possible solution to the solar neutrino problem, in which the neutrino has a very tiny mass. In this case, the correct number of neutrinos can be produced in the solar core, but on their way to Earth,
"07.09.2015 20:50:00" chandra.si.edu Chandra :: Photo Album :: Crab Nebula :: November 23, 2009 A star's spectacular death in the constellation Taurus was observed on Earth as the supernova of 1054 A.D. Now, almost a thousand years later, a super dense object -- called a neutron star -- left behind by the explosion is seen spewing out a blizzar Question of the Day!
Do you think that our galaxy has supernova remnants like the Crab Nebula in places that Chandra is incapable of seeing?
Yes, there may be another supernova remnant such as the Crab
"07.09.2015 19:40:00" chandra.si.edu Chandra :: Photo Album :: GRO J1655-40 :: 05 Jun 06 The X-ray spectrum (see inset) of a binary star system consisting of a black hole and a normal star indicates that turbulent winds of multimillion degree gas are swirling around the black hole. As the illustration shows, much of the hot gas is spiral Lunch with the Stars! GRO J1655-40: NASA's Chandra Answers Black Hole Paradox, for lunch time reading: http://chandra.si.edu/photo/2006/j1655/
"07.09.2015 18:30:00" lightexhibit.org Light: Levisticum If you come across levisticum in a garden, you will find a tall plant with dark green leaves and greenish-yellow flowers. Under a microscope, however, it looks much different. Here polarized light is used to bring out the details of this plant on the LIGHT: Beyond the Bulb – Image of the Day!
Under a microscope, polarized light can help us see more by bringing out the contrast between structures and other details otherwise difficult to see in unpolarized light.
"07.09.2015 17:04:27" Chandra X-ray Observatory We know you are a fan of NASA's Chandra X-ray Observatory on Facebook but have you been to our official web site? If not, we created a new "Start Here" feature just for you! Check it out and let us know what you think.
http://chandra.si.edu/ If you enjoy what we post here, you may LOVE what we post on our official site. We even have a special guide for new visitors: http://chandra.si.edu/
"04.09.2015 22:00:28" Chandra X-ray Observatory M101: A Pinwheel in X-rays
http://chandra.harvard.edu/photo/2008/m101/ Chandra Flashback of the Day – M101: A Pinwheel in X-rays
"04.09.2015 20:26:26" Glossary Term of the Day!
Neutrino: An electrically neutral elementary particle that is one of the products of nuclear fusion reactions. Neutrinos have little or no mass, move at close to the speed of light, and interact very weakly with matter.
"04.09.2015 19:17:40" chandra.harvard.edu Chandra :: Photo Album :: Cosmic Look-Back Time The finite speed of light means that we must always be out of date, no matter how hard we strive to keep up with the times. Thus, the seemingly simple question - what is happening right now on the Sun? - cannot be answered by an observer on Earth, be Question of the Day!
What does it mean when you say that we're seeing light from many years ago?
Because the Universe is very big and the speed of light isn't infinite, it usually takes many, many years for light from a star or a galaxy to
"04.09.2015 17:37:58" lightexhibit.org Light: Polarized Photomicrograph When you start looking on different scales, things can appear in a whole new light. Take, for example, this photomicrograph of a recrystalized mixture of anti-mucus medication and sodium citrate. LIGHT: Beyond the Bulb – Image of the Day!
A photomicrograph is simply an image that has been taken using a camera attached to a microscope. This particular photomicrograph was taken in polarized light.
"04.09.2015 16:31:07" chandra.harvard.edu Chandra :: Photo Album :: HD 189733 :: July 29, 2013 This graphic depicts HD 189733b, the first exoplanet caught passing in front of its parent star in X-rays. As described in our press release, NASA's Chandra X-ray Observatory and the European Space Agency's XMM Newton Observatory have been used to ob Lunch with the Stars! HD 189733: NASA's Chandra Sees Eclipsing Planet in X-rays for First Time, for lunch time reading: http://chandra.harvard.edu/photo/2013/hd189733/
"04.09.2015 15:31:10" Timeline Photos The evolution of stars can be changed dramatically if they are in a close binary system. These changes depend on how close the stars are to one another, and how massive the stars are.
"03.09.2015 22:59:46" chandra.harvard.edu Chandra :: Resources :: Handouts & Activities :: Chandra Lithographs PLEASE NOTE: we are not affiliated with the web page that is offering a free 2016 Chandra calendar. It looks like they might be spoofing a space web site to get personal information. Please exercise caution online, and do not enter personally identif
"03.09.2015 22:05:54" Chandra X-ray Observatory Chandra Archive Collection: Chandra's Archives Come to Life
With the passing of Chandraʼs 15th anniversary, the Chandra Data Archive, which houses all of the missionʼs data, continues to grow each suc Chandra Flashback of the Day – Chandra's Archives Come to Life
"03.09.2015 20:49:38" Glossary Term of the Day!
Nebula: General term used for any "fuzzy" patch on the sky, either light or dark; a cloud of interstellar gas and dust.
"03.09.2015 19:45:34" Chandra X-ray Observatory Fun Facts About NASA's Chandra X-ray Observatory.
(Illustration: NASA/CXC/M.Weiss) Question of the Day!
How sensitive is Chandra?
Chandra is sensitive to energies of about 0.2 to 10 kiloelectron-volts, or keV. This corresponds to a wavelength range of about 1 to 60 angstroms (an angstrom is 10 raised to the minus 10 meter
"03.09.2015 18:06:15" Timeline Photos Lunch with the Stars! X-rays from Saturn Pose Puzzles, for lunch time reading: http://chandra.si.edu/photo/2004/saturn/
"03.09.2015 16:53:51" lightexhibit.org Light: M16 Ultraviolet light from a group of young, massive stars is blasting and sculpting clouds of gas and dust that contain stars being born deep inside. This region was made famous from the release of a Hubble image in 1995 that became known as the “Pillar LIGHT: Beyond the Bulb – Image of the Day!
In this image of ultraviolet and visible light, oxygen emission is blue, sulfur is orange, and hydrogen and nitrogen are green.
Image Credit: NASA - Nation
"03.09.2015 15:33:08" chandra.si.edu Chandra :: About Chandra :: Sky in Google Earth (March 13, 2008) Google Sky lets you tour Chandra images online. Just like in Google Maps you can pan, zoom and search. Take a tour of the Chandra layers and try adjusting the transparency to see how the images fit into the optical map underneath. Vi Immerse yourself in Chandra's X-ray Universe with Sky in Google Earth and Microsoft WorldWide Telescope.
"02.09.2015 22:00:50" Chandra X-ray Observatory Galactic Center: New Vista of Milky Way Center Unveiled
http://chandra.harvard.edu/photo/2009/gcenter/ Chandra Flashback of the Day – Galactic Center: New Vista of Milky Way Center Unveiled
"02.09.2015 21:12:42" Glossary Term of the Day!
Momentum: A measure of the state of motion of a body; the momentum of a body is the product of its mass and velocity. In the absence of a force, momentum is conserved.
"02.09.2015 20:20:34" Chandra X-ray Observatory The electromagnetic thermometer scale featuring CGRO, Chandra, Hubble, Spitzer & ALMA.
X-rays are associated with high temperatures of about 10 million to 100 million K. Image (A) features multiwavelength images of the Milky Way. Gamma Ray: CGRO/EGR Question of the Day!
What is an X-ray telescope? How does it differ from other types of telescopes?
X-rays do not reflect off mirrors the same way that visible light does. Because of their high-energy, X-ray photons that strike a mirror dire
"02.09.2015 19:13:21" lightexhibit.org Light: M51 By combining light from several different telescopes, this image reveals information about the galaxy known as M51, which could never be gleaned from just one band of light. LIGHT: Beyond the Bulb – Image of the Day!
NASA’s Chandra finds point-like X-ray sources (represented in purple) that are black holes and neutron stars in binary star systems, along with a diffuse glow of hot gas.
"02.09.2015 17:50:37" 2015 Chandra Calendar Chandra 2015 Calendar: September
NGC 4258 is a spiral galaxy well known to astronomers for having two so-called anomalous arms that glow in X-ray, optical, and radio light. Rather than
"02.09.2015 16:49:00" chandra.harvard.edu Chandra :: Photo Album :: 4C+00.58 :: July 21, 2010 This image shows the effects of a giant black hole that has been flipped around twice, causing its spin axis to point in a different direction from before. The large optical image, from the Sloan Digital Sky Survey, is centered on a radio galaxy name Lunch with the Stars! 4C+00.58: Black Hole Jerked Around Twice, for lunch time reading: http://chandra.harvard.edu/photo/2010/4c0058/
"02.09.2015 15:25:53" Chandra X-ray Observatory How to Color the Universe
By making images from their data, coloring them thoughtfully, and combining them carefully, we get a more complete picture of our Universe. (Illustration: NASA/CXC/M.Weiss)
Larger version: http://chandra.si.edu/resources/il We're often asked, "How do these images get their color?" This infographic may help give you the answer you're looking for. Here's a larger version: http://chandra.si.edu/graphics/resources/illustrations/color_infograph.jpg
If you want even more inf
"01.09.2015 22:11:32" Chandra X-ray Observatory Tycho's Supernova Remnant: NASA'S Chandra Finds New Evidence on Origin of Supernovas
This Chandra image of the Tycho supernova remnant contains new evidence for what triggered the original supernov Chandra Flashback of the Day – Tycho's Supernova Remnant: NASA'S Chandra Finds New Evidence on Origin of Supernovas
"01.09.2015 21:05:21" Glossary Term of the Day!
Molecule: A tightly bound collection of atoms held together by the electromagnetic fields of the atoms. Molecules, like atoms, emit and absorb photons at specific wavelengths.
"01.09.2015 19:38:32" Chandra X-ray Observatory 1E 0657-56: NASA Finds Direct Proof of Dark Matter - http://chandra.harvard.edu/photo/2006/1e0657/index.html Question of the Day!
Admittedly, dark matter has been inferred from gravitational effects on the unexpected orbital velocities of stars in a galaxy. They do not decrease outwards as predicted by Kepler's Laws. The question is: does the hypothetical d
"01.09.2015 18:27:52" Chandra X-ray Observatory Explore the X-ray sky with our newly updated interactive Sky Map, and learn about Galactic Navigation.
Related link: Blog – Discover and Explore with the Chandra Skymap
http://chandra.si.edu/blog/node/ We now have 500 images on our Sky Map! Explore the Universe today!
"01.09.2015 17:19:18" lightexhibit.org Light: Cosmic Microwave This ancient light arrives to us not as the type of light we can see with our eyes, but in the form of microwaves, a type of light with wavelengths between radio and infrared light. This image was made by the WMAP satellite and shows the whole sky un LIGHT: Beyond the Bulb – Image of the Day!
Cosmic Microwave Background
The cosmic microwave background is the oldest light in the Universe, the afterglow of the Big Bang.
Image Credit: NASA/WMAP Science
"01.09.2015 16:20:47" chandra.harvard.edu Chandra :: Photo Album :: Coma Cluster :: September 19, 2013 A team of astronomers has discovered enormous arms of hot gas in the Coma cluster of galaxies by using NASA's Chandra X-ray Observatory and ESA's XMM-Newton. These features, which span at least half a million light years, provide insight into how the Lunch with the Stars! Coma Cluster: Clues to the Growth of the Colossus in Coma, for lunch time reading: http://chandra.harvard.edu/photo/2013/coma/
"01.09.2015 15:19:44" chandra.si.edu Chandra :: Field Guide to X-ray Sources :: White Dwarfs & Planetary Nebulas Chandra Images: White Dwarfs Printable Field Guide:White Dwarfs Questions & Answers: Normal Stars, White Dwarf Stars, and Star Clusters Most stars, including our Sun, will become white dwarfs when they reach their final, burnt-out collapsed state.
"31.08.2015 22:03:02" Chandra X-ray Observatory RX J1131-1231: Chandra & XMM-Newton Provide Direct Measurement of Distant Black Hole's Spin
Multiple images of a distant quasar known as RX J1131-1231 are visible in this combined view from Chandra (pink) an Chandra Flashback of the Day – RX J1131-1231: Chandra & XMM-Newton Provide Direct Measurement of Distant Black Hole's Spin
"31.08.2015 21:31:01" Glossary Term of the Day!
Molecular Cloud Complex: Collection of molecular clouds that spans as much as 150 light years and may contain enough material to make millions of Sun-sized stars.
"31.08.2015 20:19:07" Chandra X-ray Observatory Milky Way Local Group
The Milky Way is not an island universe, but a member of a small cluster of galaxies called the Local Group. The Local Group contains about 3 dozen known galaxies, clumped in two subgroups around two massive spiral galaxies—the Question of the Day!
How far away is the Andromeda Galaxy and how is this distance determined?
The Andromeda Galaxy (otherwise known as M31) is about 2.2 million light years away from us. To measure this distance, a special class of variable
"31.08.2015 19:14:19" Lunch with the Stars! CL 0016+1609: Chandra Independently Determines Hubble Constant, for lunch time reading: http://chandra.si.edu/photo/2006/clusters/
"31.08.2015 17:44:39" lightexhibit.org Light: Bullet Cluster Image Credit: X-ray: M.Markevitch for NASA/CXC/CfA and visible light by D. Clowe for NASA/STScI; Magellan/U. Arizona and ESO LIGHT: Beyond the Bulb – Image of the Day!
Even though it does not emit light itself, dark matter gives clues about itself by the effect it has on light from cosmic sources.
Image Credit: X-ray: M.M
"31.08.2015 16:27:20" chandra.si.edu A Carnival of Space Visits the Chandra Blog | ChandraBlog | Fresh Chandra News Welcome to the latest installment of the Carnival of Space, a weekly round up of astronomy news co-hosted on various space science blogs. It’s a pretty big Universe out there so let’s get started! Upcoming lunar eclipses, a triple star system, making multiwavelength images & more #astronews!
"31.08.2015 15:11:47" Chandra X-ray Observatory Chandra is designed to observe X-rays from high-energy regions of the Universe. Learn more about our mission here: http://chandra.si.edu/about/axaf_mission.html
"28.08.2015 22:26:51" Chandra X-ray Observatory Pulsar Punches Hole In Stellar Disk
These images contain X-ray evidence from Chandra that a clump of stellar material has been jettisoned away from a double star system at incredibly high speeds. Researcher Chandra Flashback of the Day – Pulsar Punches Hole In Stellar Disk
"28.08.2015 20:33:28" Chandra X-ray Observatory We're celebrating the International Year of Light 2015! Come celebrate with us with "LIGHT: Beyond the Bulb" an open-source international exhibition program that showcases the incredible variety of light-based science being researched today across th Did you know this?
Learn more about this picture taken on the International Space Station: http://lightexhibit.org/bio_image45.html
"28.08.2015 18:30:15" lightexhibit.org Light: Hercules A Some galaxies are extremely bright in different wavelengths of light. This is because their centers contain a supermassive black hole that is pulling in matter at a prodigious rate. In visible light (colored red, green and blue, with bright galaxies LIGHT: Beyond the Bulb – Image of the Day!
In visible light (colored red, green and blue, with bright galaxies appearing white), Hercules A looks like a typical elliptical galaxy. In X-ray light, however, a giant cloud of multimillion-degr
"28.08.2015 16:35:19" chandra.harvard.edu Chandra :: Photo Album :: Arp 147 :: February 9, 2011 Just in time for Valentine's Day comes a new image of a ring -- not of jewels -- but of black holes. This composite image of Arp 147, a pair of interacting galaxies located about 430 million light years from Earth, shows X-rays from the NASA's Chandr Lunch with the Stars! Arp 147: Giant Ring of Black Holes, for lunch time reading: http://chandra.harvard.edu/photo/2011/arp147/
"28.08.2015 15:12:23" chandra.si.edu Chandra :: About Chandra :: The Facts Behind the Top 10 Facts Explanation: For the planned operational orbit of Chandra, the closest approach to Earth and the most distant point from Earth will be as follows: Altitude at Perigee (closest approach) = 10,000 km = 6,214 (statute) mile = 5,400 nautical mile Altitud Did you know Chandra was the largest satellite the Shuttle Columbia ever launched? Find out more fun facts about Chandra here:http://chandra.si.edu/about/top_ten.html
"27.08.2015 22:00:47" Chandra X-ray Observatory Space-time Foam: NASA Telescopes Set Limits on Space-time Quantum Foam
Observations of distant quasars in X-rays from Chandra (top six images) and gamma-ray telescopes are helping scientists test the nature Chandra Flashback of the Day – NASA Telescopes Set Limits on Space-time Quantum Foam
"27.08.2015 21:01:40" Glossary Term of the Day!
Molecular Cloud: A cold, dense interstellar cloud which contains a high fraction of molecules. It is widely believed that the relatively high density of dust particles in these clouds plays an important role in the formation
"27.08.2015 19:06:47" chandra.si.edu Chandra :: Field Guide to X-ray Astronomy :: Another Form of Light A new form of radiation was discovered in 1895 by Wilhelm Roentgen, a German physicist. He called it X-radiation to denote its unknown nature. This mysterious radiation had the ability to pass through many materials that absorb visible light. X-rays Discovered in 1895, X-rays are another form of light. Look at the electromagnetic spectrum, learn how X-rays are produced, and compare medical X-rays and X-ray Astronomy.
"27.08.2015 17:46:06" chandra.si.edu Chandra :: Photo Album :: RX J1242-11 :: 18 Feb 04 X-ray data from Chandra, the European Space Agency's XMM-Newton, and the German Roengtensatellite (ROSAT) X-ray observatories provide direct evidence for the catastrophic destruction of a star that wandered too close to a supermassive black hole. Lunch with the Stars! RX J1242-11: Giant Black Hole Rips Star Apart, for lunch time reading: http://chandra.si.edu/photo/2004/rxj1242/
"27.08.2015 16:39:18" lightexhibit.org Light: Antennae Galaxies The Antennae are two galaxies in the process of merging. They were once spiral galaxies like our Milky Way, but they have been interacting and colliding for hundreds of millions of years and are morphing into a new object. Infrared and visible light LIGHT: Beyond the Bulb – Image of the Day!
Infrared and visible light captured in this image from the Hubble Space Telescope give us clues about the cosmic chaos going on.
Image Credit: NASA/ES
"27.08.2015 15:30:07" Tour of Abell 1033 Tour of Abell 1033
Understanding how clusters grow is critical to tracking how the Universe itself evolves over time.
Learn more about Abell 1033: http://chandra.si.edu/photo/2015/a1033/
Check out more Chandra Podcasts: http://chandra.si.edu/resou
"26.08.2015 21:58:24" Chandra X-ray Observatory Clues to the Growth of the Colossus in Coma
Enormous arms of hot gas have been revealed in the Coma galaxy cluster in data from NASA's Chandra X-ray Observatory and ESA's XMM-Newton. A specially processed Chandra Flashback of the Day – Clues to the Growth of the Colossus in Coma
"26.08.2015 21:10:11" Glossary Term of the Day!
Millisecond Pulsar: A pulsar whose period indicates that the neutron star is rotating nearly 1000 times each second.
"26.08.2015 20:10:02" Chandra X-ray Observatory Stellar black holes, mid-mass black holes, and supermassive black holes. Question of the Day!
How long does it take a star to form a black hole after its death?
Black Hole formation during the collapse of massive stars can proceed in two different ways: either the massive star collapses directly into a black hol
"26.08.2015 18:49:36" lightexhibit.org Light: ngc602 This galaxy is so bright in the southern night sky that navigators for centuries have used it to help guide them across the ocean. Modern telescopes reveal there is much more to this object than just being a bright prick of light seen from sea. This LIGHT: Beyond the Bulb – Image of the Day!
In this view of the so-called Small Magellanic Cloud (named after Ferdinand Magellan), X-ray light is purple, infrared light is red, and optical light is red, green, and blue. Together, these differe
"26.08.2015 17:24:44" chandra.harvard.edu Chandra :: Photo Album :: Abell 644 :: December 20, 2010 This artist's illustration shows an enormous halo of hot gas (in blue) around the Milky Way galaxy. Also shown, to the lower left of the Milky Way, are the Small and Large Magellanic Clouds, two small neighboring galaxies (roll your mouse over the im Lunch with the Stars! Abell 644: How Often do Giant Black Holes Become Hyperactive?, for lunch time reading: http://chandra.harvard.edu/photo/2010/2gal/
"26.08.2015 16:27:33" Groups & Clusters of Galaxies Abell 1033: Chandra Data Suggest Giant Collision Triggered "Radio Phoenix"
Astronomers have found evidence for a "radio phoenix" in the collision of two galaxy clusters, where vast clouds of high-energy partic
"26.08.2015 15:29:07" chandra.harvard.edu Happy First Light Anniversary! | ChandraBlog | Fresh Chandra News Sixteen years ago today, the first images from the newly-launched Chandra X-ray Observatory were released to the public. While these images were spectacular themselves, they also represented the promise of the amazing things that Chandra might be abl An official Chandra Blog about one of the first images the Chandra X-ray Observatory ever took!
"25.08.2015 21:59:09" Chandra X-ray Observatory Chandra Examines Jupiter During New Horizons Approach
http://chandra.harvard.edu/photo/2007/jupiter/ Chandra Flashback of the Day – Chandra Examines Jupiter During New Horizons Approach
"25.08.2015 20:58:03" chandra.si.edu Chandra :: Resources :: Glossary :: Electromagnetic Radiation & Electromagnetic Spectrum Glossary Term of the Day!
Microwave Radiation: Radiation between radio and infrared wavelengths, having a wavelength between about 0.1 and 10 cm. More info: http://chandra.si.edu/resources/em_radiation.html
"25.08.2015 19:38:14" Chandra X-ray Observatory Black Holes
A black hole is an object containing so much mass concentrated in a relatively small space that light can not escape.(Illustration: NASA/CXC/M.Weiss)
http://www.chandra.si.edu/resources/illustrations/infographics.html Question of the Day!
What are "ergosphere" and "stationary limit", and what is an "event horizon"?
A "stationary limit" is a surface around the outside of a rotating black hole. Any object which passes through this surface is always in moti
"25.08.2015 17:41:30" chandra.si.edu Chandra :: Photo Album :: Blowing Cosmic Super Bubbles :: 30 Aug 07 At a distance of only 200,000 light years, the Small Magellanic Cloud (SMC) is one of the Milky Way's closest galactic neighbors. With its millions of stars, the SMC offers astronomers a chance to study phenomena across the stellar life cycle. In var Lunch with the Stars! LHa115-N19: Blowing Cosmic Super Bubbles, for lunch time reading: http://chandra.si.edu/photo/2007/n19/
"25.08.2015 16:40:58" Chandra X-ray Observatory LIGHT: Beyond the Bulb – Image of the Day!
Our Galaxy in Many Kinds of Light
This image of the center of our Milky Way galaxy combines data from three NASA - National Aeronautics and Space Administration observatories. X-rays from the Chandra X-ray O
"25.08.2015 16:38:01" lightexhibit.org Light: Milky Way Light takes on many forms—from radio to infrared to X-rays and more. And the Universe tells its story through all of these different types of radiation. So, in order to really understand the cosmos, astronomers need many different kinds of telescopes LIGHT: Beyond the Bulb – Image of the Day!
Our Galaxy in Many Kinds of Light
This image of the center of our Milky Way galaxy combines data from three NASA - National Aeronautics and Space Administration observatories. X-rays from the Chandra X-ray O
"25.08.2015 15:22:48" Chandra X-ray Observatory Try it!
Hold a bat horizontally in your hand, gripping it in the middle. Twist it back and forth to rotate it, like in the figure above. Now grip that same bat all the way at the end and try to rotate it again. It is much harder. That’s because the Science and sports are connected more than you would expect. Learn how in this "STOP for Science" topic: http://chandra.si.edu/edu/stop/explore/bat.html
"24.08.2015 21:58:20" Chandra X-ray Observatory Abell 30: X-rays from a Reborn Planetary Nebula
The inset image on the right is a close-up view of A30 showing X-ray data from NASA's Chandra X-ray Observatory in purple and Hubble Space Telescope data sho Chandra Flashback of the Day – Abell 30: X-rays from a Reborn Planetary Nebula
"24.08.2015 20:24:19" Glossary Term of the Day!
Micro-quasar: A stellar-mass black hole that launches powerful jets of particles and radiation.
"24.08.2015 18:47:07" chandra.harvard.edu Chandra :: Field Guide to X-ray Sources :: Supernovas & Supernova Remnants Every 50 years or so, a massive star in our galaxy blows itself apart in a supernova explosion. Supernovas are one of the most violent events in the universe, and the force of the explosion generates a blinding flash of radiation, as well as shock wa When a star blows apart in a supernova, the explosion creates a remnant of multi-million degree gas that shines brightly in X-rays for thousands of years. Learn more about these explosive wonders: http://chandra.harvard.edu/xray_sources/supernovas.ht
"24.08.2015 17:37:32" lightexhibit.org Light: Cassiopia A One of the most famous bodies in the night sky is the Cassiopeia A supernova remnant. This object was created when a massive star ran out of fuel and exploded, hurtling its outer layers into space at millions of miles per hour. Because this material LIGHT: Beyond the Bulb – Image of the Day!
This image of Cassiopeia A was taken with NASA's Chandra X-ray Observatory and shows three different energy bands of X-ray light in red, green, and blue.
"24.08.2015 16:20:56" chandra.harvard.edu Chandra :: Photo Album :: Abell 2744 :: June 22, 2011 One of the most complicated and dramatic collisions between galaxy clusters ever seen is captured in this new composite image. This collision site, known officially as Abell 2744, has been dubbed "Pandora's Cluster" because of the wide variety of dif Lunch with the Stars! Abell 2744: Pandora's Cluster Revealed, for lunch time reading: http://chandra.harvard.edu/photo/2011/a2744/
"24.08.2015 15:14:07" spacer.pamhoffman.com Carnival of Space #420 - Everyday Spacer Carnival of Space Celestial fireworks, a farewell to Dione, the fate of the Universe & more #astronews
"21.08.2015 22:37:20" Chandra X-ray Observatory WASP-18: NASA's Chandra X-ray Observatory Finds Planet That Makes Star Act Deceptively Old
The artist's illustration featured in the main part of this graphic depicts a star and its planet, WASP-18b, a Chandra Flashback of the Day – WASP-18: NASA's Chandra X-ray Observatory Finds Planet That Makes Star Act Deceptively Old
"21.08.2015 21:27:28" Glossary Term of the Day
Matter-antimatter Annihilation: A highly efficient process in which equal amounts of matter and anti-matter collide and destroy each other, producing a burst of energy, primarily in the form of gamma rays.
"21.08.2015 20:07:26" Chandra X-ray Observatory Stellar Evolution with Type 1a Supernova Remnant
This graphic gives a summary of our best current understanding of the evolution of stars, showing their birth, middle age and eventual demise. The lowest mass stars are shown at the bottom and the hig Question of the Day!
Is there such a thing as a red dwarf? If so, how is it different from a white or brown dwarf?
A red dwarf is a star that has a mass between approximately 8% and 50% of the mass of the Sun. It is different from a brown dw
"21.08.2015 17:47:58" lightexhibit.org Light: Eagle Nebula Our Galaxy is filled with giant gas clouds containing atoms of hydrogen, carbon, oxygen, and other heavy elements–the building blocks out of which new stars and planets are made. These atoms can be energized–either from ultraviolet light from nearby LIGHT: Beyond the Bulb – Image of the Day!
This image, made at the Kitt Peak National Observatory in Arizona, features the Eagle Nebula, or Messier 16, in all of its glory. This view shows a central cluster of stars that is forming withi
"21.08.2015 16:36:44" chandra.harvard.edu Chandra :: Photo Album :: Phoenix Cluster :: August 15, 2012 The image on the left shows the newly discovered Phoenix Cluster, located about 5.7 billion light years from Earth. This composite includes an X-ray image from NASA's Chandra X-ray Observatory in purple, an optical image from the 4m Blanco telescope Lunch with the Stars! Phoenix Cluster Sets Record Pace at Forming Stars, for lunch time reading: http://chandra.harvard.edu/photo/2012/phoenix/
"21.08.2015 15:29:08" Chandra X-ray Observatory Cassiopeia A: A supernova remnant about 11,000 light years away.
This image presents a beautiful composite of X-rays from Chandra (red, green, and blue) and optical data from Hu We certainly love them Mr. Bailey!
Get to know Philip James Bailey and this featured image of Cassiopeia A: http://chandra.si.edu/resources/illustrations/pins/casa_pin.html
"20.08.2015 22:05:02" Chandra X-ray Observatory Monster "El Gordo" Galaxy Cluster is Bigger than Thought
When scientists first discovered this galaxy cluster in 2012 with Chandra and ground-based optical telescopes, they nicknamed it "El Gordo" (the Chandra Flashback of the Day – Monster "El Gordo" Galaxy Cluster is Bigger than Thought
"20.08.2015 20:34:34" Glossary Term of the Day!
Matter-dominated Universe: A universe in which the density of matter exceeds the density of radiation. The present-day universe is matter-dominated.
"20.08.2015 19:20:20" chandra.harvard.edu Chandra :: Photo Album :: C153 :: 06 Jan 04 These images offer a dramatic look at C153, a galaxy being ripped apart as it races at 4.5 million miles per hour through a distant cluster of galaxies. The infalling galaxy's gas is being stripped by the pressure of 20-million-degree Celsius gas tha Question of the Day!
In a release from Chandra, you show a galaxy called C153. What if there were a human populated planet in this mess. Would they be in survivable conditions?
It's impossible to know for sure, but we suspect that human popu
"20.08.2015 17:46:40" lightexhibit.org Light: Orion Nebula The Orion Nebula, a region just to the south of the belt in the constellation bearing his name, is an active and boisterous stellar nursery. LIGHT: Beyond the Bulb – Image of the Day!
This image of the Orion Nebula is in infrared light, which, in contrast to light at visible wavelengths, passes through the dust that pervades the nebula, and reveals the very young stars buried
"20.08.2015 16:29:41" chandra.harvard.edu Chandra :: Photo Album :: SXP 1062 :: December 20, 2011 With the holiday season in full swing, a new image from an assembly of telescopes has revealed an unusual cosmic ornament. Data from NASA's Chandra X-ray Observatory and ESA's XMM-Newton have been combined to discover a young pulsar in the remains of Lunch with the Stars! SXP 1062: Celestial Bauble Intrigues Astronomers, for lunch time reading: http://chandra.harvard.edu/photo/2011/sxp1062/
"20.08.2015 15:12:28" chandra.si.edu Chandra :: Field Guide to X-ray Astronomy :: X-Ray Absorption Absorption by the Earth's atmosphere restricts ground-based observations to radio, near infrared, and visible wavelengths. X-rays are absorbed high above the Earth in the following way: What happens when an X-ray is absorbed in the atmosphere? How do X-ray telescopes in orbit above the Earth's atmosphere collect X-rays? Answers to these questions and more here: http://chandra.si.edu/xray_astro/absorption.html
"19.08.2015 21:57:12" Chandra X-ray Observatory M82: Stunning View of Starburst Galaxy
http://chandra.harvard.edu/photo/2006/m82/ Chandra Flashback of the Day – M82: Stunning View of Starburst Galaxy
"19.08.2015 20:50:18" Glossary Term of the Day!
Mass-radius Relation: The dependence of the radius of a main-sequence star on its mass. The radius rises roughly in proportion to the mass.
"19.08.2015 18:58:53" chandra.si.edu Chandra :: Educational Materials :: Recoloring the Universe for #HourOfCode with Pencil Code Science Olympiad Astronomy WebinarScience Olympiad is a national non-profit organization dedicated to improving the quality of K-12 science education, increasing interest in science for all students. Recoloring the Universe for #HourOfCode with Pencil Code
Grades 4-12 students can learn how astronomers use computers to create images and understand their data.
"19.08.2015 17:45:58" lightexhibit.org Light: Helix Nebula When stars like our Sun run out of hydrogen fuel in their central regions, nuclear fusion of helium nuclei becomes the primary energy source. This and other nuclear fusion processes produce even heavier elements such as carbon, nitrogen, and oxygen a LIGHT: Beyond the Bulb – Image of the Day!
The blue-green glow at the center of this object, known as the Helix Nebula, comes from oxygen atoms energized by the intense ultraviolet light from the very hot star that remains in the center.
"19.08.2015 16:21:08" chandra.harvard.edu Chandra :: Photo Album :: Cassiopeia A :: November 15, 2013 One of the most famous objects in the sky - the Cassiopeia A supernova remnant - will be on display like never before, thanks to NASA's Chandra X-ray Observatory and a new project from the Smithsonian Institution. A new three-dimensional (3D) viewer, Lunch with the Stars! Exploring the Third Dimension of Cassiopeia A, for lunch time reading: http://chandra.harvard.edu/photo/2013/casa/
"19.08.2015 15:14:48" Chandra X-ray Observatory Get to know more about this giant galaxy cluster: http://chandra.harvard.edu/photo/2014/elgordo/
Astronomy Fact #23
It would take light about 8 million years to get across the galaxy cluster El Gordo.
Since light moves at ~186,000 miles per second Did you know this?? Learn more about this giant cluster right here: http://chandra.harvard.edu/photo/2014/elgordo/
"18.08.2015 22:01:34" Chandra X-ray Observatory Sagittarius A*: NASA'S Chandra Catches Our Galaxy's Giant Black Hole Rejecting Food
One of the biggest observing campaigns ever performed by Chandra has provided new understanding into why gas near the gian Chandra Flashback of the Day – Sagittarius A*: NASA'S Chandra Catches Our Galaxy's Giant Black Hole Rejecting Food
"18.08.2015 20:29:44" Chandra X-ray Observatory Neutron Stars
Despite the fact a neutron star is only about 13 miles (20km) in diameter it is about 1.5 times more massive than the sun.
Larger version: http://chandra.si.edu/resources/illustrations/infographics.htm Question of the Day!
Why do neutron stars have strong magnetic fields?
A neutron star is formed when a massive star collapses - if the star has a magnetic field of approximately the strength of the Sun's magnetic field (a few gauss), the mag
"18.08.2015 18:51:58" chandra.harvard.edu Chandra :: Field Guide to X-ray Astronomy :: Binary and Multiple Star Systems More than 80% of all stars are members of multiple star systems containing two or more stars. Exactly how these systems are formed is not well understood. Some are thought to form when a collapsing cloud of gas breaks apart into two or more clouds wh The evolution of stars can be changed dramatically if they are in a close binary system. These changes depend on how close the stars are to one another, and how massive the stars are.
"18.08.2015 17:44:26" lightexhibit.org Light: Rho Ophiuchi And Antares This dusty region between the constellations Ophiuchus (the "snake holder") and Scorpius (the "scorpion") contains a colorful cosmic vista. LIGHT: Beyond the Bulb – Image of the Day!
Rho Ophiuchi And Antares
These colors tell some of the story behind the interplay between light and matter in this object.
Image Credit: Australian Astronomical Observa
"18.08.2015 16:33:09" chandra.harvard.edu Chandra :: Photo Album :: Abell 383 :: March 14, 2012 Two teams of astronomers have used data from NASA's Chandra X-ray Observatory and other telescopes to map the distribution of dark matter in a galaxy cluster known as Abell 383, which is located about 2.3 billion light years from Earth. Not only were Lunch with the Stars! Abell 383: Getting a Full Picture of an Elusive Subject, for lunch time reading:
"18.08.2015 15:25:28" lightexhibit.org Exhibit Photos View recent photos of Light: Beyond the Bulb exhibits from locations around the world. If you have event photos to share, please email us at firstname.lastname@example.org with the highest resolution photos you have available, a short description and credit lin New exhibit photos/venues have been added for the International Year of Light 2015. Recognize any locations near you?
"17.08.2015 22:01:13" Chandra X-ray Observatory Cassiopeia A: Exploring the Third Dimension of Cassiopeia A
This new version of Chandra's image of the Cassiopeia A supernova remnant has been specially processed to show with better clarity the appearance Chandra Flashback of the Day – Cassiopeia A: Exploring the Third Dimension of Cassiopeia A
"17.08.2015 21:10:01" Glossary Term of the Day!
Mass-luminosity Relation: The dependence of the luminosity of a main-sequence star on its mass. The luminosity increases roughly as the mass raises to the third power.
"17.08.2015 20:02:59" astronomycafe.net FAQs about the expansion of the universe - The Astronomy Cafe - Ask the Astronomer Question of the Day!
How do photons lose their energy to the universe as they cross it? Do photons shed their energy by emitting it as extremely weak photons or interact with nearby particles or each other so weakly that it only appears continuous? T
"17.08.2015 18:41:16" lightexhibit.org Light: Total Solar Eclipse A total solar eclipse is a natural phenomenon that happens when the Moon passes between the Sun and Earth in just the right alignment, blocking the light from the Sun to certain places on Earth. Some people, often called "eclipse chasers," will trave LIGHT: Beyond the Bulb – Image of the Day!
Total Solar Eclipse
Totality is when the shadow of the Moon blocks the entire disk of the Sun, leaving only its outer layer (corona) visible.
Image Credit: Dan Schec
"17.08.2015 16:35:33" chandra.harvard.edu Chandra :: Photo Album :: SN 1957D in M83 :: July 30, 2012 Over fifty years ago, a supernova was discovered in M83, a spiral galaxy about 15 million light years from Earth. Astronomers have used NASA's Chandra X-ray Observatory to make the first detection of X-rays emitted by the debris from this explosion. Lunch with the Stars! SN 1957D in M83: X-Rays Discovered from Young Supernova Remnant, for lunch time reading: http://chandra.harvard.edu/photo/2012/m83sn/
"17.08.2015 15:31:42" chandra.si.edu Chandra Press Room :: Stephen S. Murray, High-Energy Astrophysicist, Dies at Age 70 :: 17 August 15 Prominent astrophysicist Stephen (Steve) S. Murray died on Monday, August 10, 2015. Dr. Murray is widely recognized for advancing the field of high-energy astrophysics through the development of instruments and hardware as well as his research. We are sad to say goodbye to prominent, high-energy astrophysicist Stephen S. Murray.
"14.08.2015 22:15:00" chandra.si.edu Chandra :: Photo Album :: Crab Nebula :: November 5, 2008 This image gives the first clear view of the faint boundary of the Crab Nebula's X-ray-emitting pulsar wind nebula. The nebula is powered by a rapidly rotating, highly magnetized neutron star, or pulsar (white dot near the center). The combination of Chandra Flashback of the Day – Fingers, Loops and Bays in The Crab Nebula: http://chandra.si.edu/photo/2008/crab/
"14.08.2015 21:15:00" Glossary Term of the Day!
Mass: A measure of the total amount of matter contained within an object.
"14.08.2015 20:15:00" chandra.si.edu Chandra :: About Chandra :: Sky in Google Earth (March 13, 2008) Google Sky lets you tour Chandra images online. Just like in Google Maps you can pan, zoom and search. Take a tour of the Chandra layers and try adjusting the transparency to see how the images fit into the optical map underneath. Vi Immerse yourself in Chandra's X-ray Universe with Sky in Google Earth and Microsoft WorldWide Telescope.
"14.08.2015 19:15:01" Question of the Day!
Can Chandra calculate red shift data of objects?
Yes. The ability of the transmission gratings on Chandra to make fine distinctions between the energies of the X-rays from an object makes it possible to identify sharp pe