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19-Sep-2013 9:20 AM EDT
Clues to the Growth of the Colossus in Coma
Chandra X-ray Observatory

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 Coma cluster has grown through mergers of smaller groups and clusters of galaxies to become one of the largest structures in the Universe held together by gravity.

29-Aug-2013 12:25 PM EDT
NASA'S Chandra Catches Our Galaxy's Giant Black Hole Rejecting Food
Chandra X-ray Observatory

Astronomers using NASA's Chandra X-ray Observatory have taken a major step in explaining why material around the giant black hole at the center of the Milky Way Galaxy is extraordinarily faint in X-rays. This discovery holds important implications for understanding black holes.

Released: 14-Aug-2013 1:00 PM EDT
Dwarf Galaxy Caught Ramming Into a Large Spiral
Chandra X-ray Observatory

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 larger galaxy called NGC 1232.

Released: 29-Jul-2013 3:00 PM EDT
NASA's Chandra Sees Eclipsing Planet in X-rays for First Time
Chandra X-ray Observatory

For the first time since exoplanets, or planets around stars other than the sun, were discovered almost 20 years ago, X-ray observations have detected an exoplanet passing in front of its parent star.

Released: 23-May-2013 10:00 AM EDT
A Hidden Population of Exotic Neutron Stars
Chandra X-ray Observatory

Magnetars – the dense remains of dead stars that erupt sporadically with bursts of high-energy radiation – are some of the most extreme objects known in the Universe. A major campaign using NASA's Chandra X-ray Observatory and several other satellites shows magnetars may be more diverse – and common – than previously thought.

Released: 15-May-2013 2:00 PM EDT
Black Hole Powered Jets Plow Into Galaxy
Chandra X-ray Observatory

The intense gravity of a supermassive black hole can be tapped to produce immense power in the form of jets moving at millions of miles per hour. A composite image shows this happening in the galaxy known as 4C+29.30 where X-rays from Chandra (blue) have been combined with optical (gold) and radio (pink) data. The X-rays trace the location of superheated gas around the black hole, which is estimated to weight 100 million times the mass of our Sun.

Released: 30-Apr-2013 2:00 PM EDT
Colossal Hot Cloud Envelopes Colliding Galaxies
Chandra X-ray Observatory

Scientists have used NASA's Chandra X-ray Observatory to make a detailed study of an enormous cloud of hot gas enveloping two large, colliding galaxies. This unusually large reservoir of gas contains as much mass as 10 billion Suns, spans about 300,000 light years, and radiates at a temperature of more than 7 million degrees.

Released: 3-Apr-2013 10:00 AM EDT
Taken Under The "Wing" of the Small Magellanic Cloud
Chandra X-ray Observatory

The Small Magellanic Cloud (SMC) is one of the Milky Way's closest galactic neighbors. Many navigators used this object to make their way across the oceans. A new composite image from three NASA telescopes -- Chandra, Hubble, and Spitzer -- shows this galaxy like Ferdinand Magellan, who lends his name to the SMC, could never have imagined.

Released: 18-Mar-2013 11:00 AM EDT
Famous Supernova Reveals Clues About Crucial Cosmic Distance Markers
Chandra X-ray Observatory

A new study using data from NASA's Chandra X-ray Observatory points to the origin of a famous supernova. This supernova, discovered in 1604 by Johannes Kepler, belongs to an important class of objects that are used to measure the rate of expansion of the Universe.

Released: 6-Mar-2013 12:00 PM EST
Probing Extreme Matter Through Observations of Neutron Stars
Chandra X-ray Observatory

Neutron stars, the ultra-dense cores left behind after massive stars collapse, contain the densest matter known in the Universe outside of a black hole. New results from Chandra and other X-ray telescopes have provided one of the most reliable determinations yet of the relation between the radius of a neutron star and its mass. These results constrain how nuclear matter – protons and neutrons, and their constituent quarks – interact under the extreme conditions found in neutron stars.

Released: 13-Feb-2013 10:30 AM EST
NASA'S Chandra Suggests Rare Explosion Created Our Galaxy's Youngest Black Hole
Chandra X-ray Observatory

New data from NASA's Chandra X-ray Observatory suggest a highly distorted supernova remnant may contain the most recent black hole formed in the Milky Way galaxy. The remnant appears to be the product of a rare explosion in which matter is ejected at high speeds along the poles of a rotating star.

Released: 18-Dec-2012 2:00 PM EST
From Super to Ultra: Just How Big Can Black Holes Get?
Chandra X-ray Observatory

Some of the biggest black holes in the Universe may actually be even bigger than previously thought, according to a study using data from NASA's Chandra X-ray Observatory.

Released: 6-Dec-2012 10:00 AM EST
Searching for the Best Black Hole Recipe
Chandra X-ray Observatory

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? They are tackling this problem by studying the number of black holes in galaxies with different compositions. One of these galaxies is the ring galaxy NGC 922 that was formed by the collision between two galaxies.

Released: 28-Nov-2012 11:00 AM EST
Record-Setting X-Ray Jet Discovered
Chandra X-ray Observatory

A jet of X-rays from a supermassive black hole 12.4 billion light years from Earth has been detected by NASA’s Chandra X-ray Observatory. This is the most distant X-ray jet ever observed and gives astronomers a glimpse into the explosive activity associated with the growth of supermassive black holes in the early universe.

Released: 15-Nov-2012 10:50 AM EST
X-Rays From a Reborn Planetary Nebula
Chandra X-ray Observatory

These images taken with several different telescopes of the planetary nebula Abell 30, (a.k.a. A30), show one of the clearest views ever obtained of a special phase of evolution for these objects.

Released: 24-Oct-2012 2:45 PM EDT
Revealing a Mini-Supermassive Black Hole
Chandra X-ray Observatory

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 other observatories. The host galaxy is of a type not expected to harbor supermassive black holes, suggesting that this black hole, while related to its supermassive cousins, may have a different origin.

Released: 10-Oct-2012 2:30 PM EDT
A Planetary Nebula Gallery
Chandra X-ray Observatory

This gallery shows four planetary nebulas from a survey of such objects in the solar neighborhood made with NASA's Chandra X-ray Observatory. X-ray emission from Chandra is colored purple and optical emission from the Hubble Space Telescope is colored red, green and blue. A planetary nebula is a phase of stellar evolution that the sun should experience several billion years from now, when becomes a red giant and then sheds most of its outer layers.

Released: 24-Sep-2012 12:55 PM EDT
NASA's Chandra Shows Milky Way Is Surrounded by Halo of Hot Gas
Chandra X-ray Observatory

Astronomers have used NASA's Chandra X-ray Observatory to find evidence our Milky Way Galaxy is embedded in an enormous halo of hot gas that extends for hundreds of thousands of light years. The estimated mass of the halo is comparable to the mass of all the stars in the galaxy. If the size and mass of this gas halo is confirmed, it also could be an explanation for what is known as the "missing baryon" problem for the galaxy.

Released: 11-Sep-2012 1:00 PM EDT
Was Kepler’s Supernova Unusually Powerful?
Chandra X-ray Observatory

This composite image of Kepler's supernova remnant shows different colors ranging from lower to higher energies: red, yellow, green, blue and purple. An optical image from the Digitized Sky Survey (pale yellow and blue) shows stars in the field. The Kepler supernova was a Type Ia event, the thermonuclear explosion of a white dwarf. New analysis suggests that the supernova explosion was not only more powerful, but might have also occurred at a greater distance, than previously thought.

Released: 30-Aug-2012 12:50 PM EDT
A Surprisingly Bright Superbubble
Chandra X-ray Observatory

A new image with data from NASA's Chandra X-ray Observatory, the Spitzer Space Telescope, and the Wide Field Imager on the Max Planck/ESO 2.2-meter telescope reveals a surprisingly bright superbubble in a nearby nebula.

Released: 27-Aug-2012 1:30 PM EDT
New Exhibit Connects Science From Here, There, and Everywhere
Chandra X-ray Observatory

A new NASA exhibit, called "Here, There, and Everywhere," illustrates how familiar phenomena on Earth and across the Universe are connected by basic physical laws. The main feature behind this project, known by the acronym of HTE, is a series of spectacular visual comparisons that span from the human scale on Earth to some of the largest structures in the cosmos. The panels in each of the exhibit topics give examples, with explanatory text, of the same physical process occurring on vastly different scales.

Released: 15-Aug-2012 2:30 PM EDT
Phoenix Cluster Sets Record Pace at Forming Stars
Chandra X-ray Observatory

Astronomers have found an extraordinary galaxy cluster, one of the largest objects in the universe, that is breaking several important cosmic records. Observations of the Phoenix cluster with NASA's Chandra X-ray Observatory, the National Science Foundation's South Pole Telescope, and eight other world-class observatories may force astronomers to rethink how these colossal structures and the galaxies that inhabit them evolve.

Released: 28-Jun-2012 4:25 PM EDT
Has the Speediest Pulsar Been Found?
Chandra X-ray Observatory

Researchers using three different telescopes -- NASA's Chandra X-ray Observatory and ESA's XMM-Newton in space, and the Parkes radio telescope in Australia -- may have found the fastest moving pulsar ever seen.

Released: 12-Jun-2012 10:00 AM EDT
Black Hole Growth Found to Be Out of Sync
Chandra X-ray Observatory

New evidence from NASA's Chandra X-ray Observatory challenges prevailing ideas about how black holes grow in the centers of galaxies. Astronomers long have thought that a supermassive black hole and the bulge of stars at the center of its host galaxy grow at the same rate -- the bigger the bulge, the bigger the black hole. However, a new study of Chandra data has revealed two nearby galaxies with supermassive black holes that are growing faster than the galaxies themselves.

Released: 4-Jun-2012 2:15 PM EDT
Giant Black Hole Kicked Out of Home Galaxy
Chandra X-ray Observatory

Astronomers have found strong evidence that a massive black hole is being ejected from its host galaxy at a speed of several million miles per hour. New observations from NASA's Chandra X-ray Observatory suggest that the black hole collided and merged with another black hole and received a powerful recoil kick from gravitational wave radiation.

Released: 15-May-2012 11:00 AM EDT
A Supernova Cocoon Breakthrough
Chandra X-ray Observatory

Observations with NASA’s Chandra X-ray Observatory have provided the first X-ray evidence of a supernova shock wave breaking through a cocoon of gas surrounding the star that exploded. This discovery may help astronomers understand why some supernovas are much more powerful than others.

Released: 30-Apr-2012 2:25 PM EDT
NASA's Chandra Sees Remarkable Outburst From Old Black Hole
Chandra X-ray Observatory

An extraordinary outburst produced by a black hole in a nearby galaxy has provided direct evidence for a population of old, volatile stellar black holes. The discovery, made by astronomers using NASA's Chandra X-ray Observatory, provides new insight into the nature of a mysterious class of black holes that can produce as much energy in X-rays as a million suns radiate at all wavelengths.

Released: 12-Apr-2012 12:00 PM EDT
Discovery of the Musket Ball Cluster
Chandra X-ray Observatory

Using a combination of powerful observatories in space and on the ground, astronomers have observed a violent collision between two galaxy clusters in which so-called normal matter has been wrenched apart from dark matter through a violent collision between two galaxy clusters.

Released: 29-Mar-2012 11:40 AM EDT
A Star Explodes and Turns Inside Out
Chandra X-ray Observatory

A new X-ray study of the remains of an exploded star indicates that the supernova that disrupted the massive star may have turned it inside out in the process. Using very long observations of Cassiopeia A (or Cas A), a team of scientists has mapped the distribution elements in the supernova remnant in unprecedented detail. This information shows where the different layers of the pre-supernova star are located three hundred years after the explosion, and provides insight into the nature of the supernova.

Released: 14-Mar-2012 12:40 PM EDT
Getting a Full Picture of an Elusive Subject
Chandra X-ray Observatory

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 the researchers able to find where the dark matter lies in the two dimensions across the sky, they were also able to determine how the dark matter is distributed along the line of sight.

Released: 21-Feb-2012 1:00 PM EST
NASA’S Chandra Finds Fastest Wind from Stellar-Mass Black Hole
Chandra X-ray Observatory

Astronomers using NASA’s Chandra X-ray Observatory have clocked the fastest wind yet discovered blowing off a disk around a stellar-mass black hole. This result has important implications for understanding how this type of black hole behaves.

Released: 8-Feb-2012 1:15 PM EST
NASA's Chandra Finds Milky Way's Black Hole Grazing on Asteroids
Chandra X-ray Observatory

The giant black hole at the center of the Milky Way may be vaporizing and devouring asteroids, which could explain the frequent flares observed, according to astronomers using data from NASA's Chandra X-ray Observatory.

Released: 17-Nov-2011 4:00 PM EST
NASA’s Chandra Adds to Black Hole Birth Announcement
Chandra X-ray Observatory

New details about the birth of a famous black hole that took place millions of years ago have been uncovered, thanks to a team of scientists who used data from NASA’s Chandra X-ray Observatory as well as from radio, optical and other X-ray telescopes.

Released: 13-Sep-2011 12:00 PM EDT
Star Blasts Planet with X-Rays
Chandra X-ray Observatory

A nearby star is pummeling a companion planet with a barrage of X-rays a hundred thousand times more intense than the Earth receives from the Sun. New data from NASA's Chandra X-ray Observatory and the European Southern Observatory's Very Large Telescope suggest that high-energy radiation is evaporating about 5 million tons of matter from the planet every second. This result gives insight into the difficult survival path for some planets.

Released: 24-May-2011 10:00 AM EDT
Nearby Supernova Factory Ramps Up
Chandra X-ray Observatory

A local supernova factory has recently started production, according to a wealth of new data from NASA's Chandra X-ray Observatory on the Carina Nebula. This discovery may help astronomers better understand how some of the Galaxy's heaviest and youngest stars race through their lives and release newly-forged elements into their surroundings.

Released: 26-Apr-2011 2:00 PM EDT
Chandra Finds New Evidence on Origin of Supernovas
Chandra X-ray Observatory

Astronomers may now know the cause of an historic supernova explosion that is an important type of object for investigating dark energy in the universe. The discovery, made using NASA's Chandra X-ray Observatory, also provides strong evidence that a star can survive the explosive impact generated when a companion star goes supernova.

Released: 23-Feb-2011 3:00 PM EST
NASA's Chandra Finds Superfluid in Neutron Star's Core
Chandra X-ray Observatory

NASA's Chandra X-ray Observatory has discovered the first direct evidence for a superfluid, a bizarre, friction-free state of matter, at the core of a neutron star. Superfluids created in laboratories on Earth exhibit remarkable properties, such as the ability to climb upward and escape airtight containers. The finding has important implications for understanding nuclear interactions in matter at the highest known densities.

Released: 13-Jan-2011 3:45 PM EST
Chandra Images Torrent of Star Formation
Chandra X-ray Observatory

A new Chandra X-ray Observatory image of Messier 82, or M82, shows the result of star formation on overdrive. At a distance of only 12 million light years, M82 provides a unique cosmic laboratory for studying conditions similar to those that existed billions of years ago when stars were forming at a furious rate in most galaxies.

Released: 12-Jan-2011 9:00 PM EST
Taking the Pulse of a Black Hole System
Chandra X-ray Observatory

Using two NASA X-ray satellites, astronomers have discovered what drives the “heartbeats” seen in the light from an unusual black hole system. These results give new insight into the ways that black holes can regulate their intake and severely curtail their growth.

Released: 20-Dec-2010 1:00 PM EST
How Often Do Giant Black Holes Become Hyperactive?
Chandra X-ray Observatory

A new study from NASA's Chandra X-ray Observatory tells scientists how often the biggest black holes have been active over the last few billion years. This discovery clarifies how supermassive black holes grow and could have implications for how the giant black hole at the center of the Milky Way will behave in the future.

Released: 14-Sep-2010 11:00 AM EDT
Chandra Finds Evidence for Stellar Cannibalism
Chandra X-ray Observatory

Evidence that a star has recently engulfed a companion star or a giant planet has been found using NASA's Chandra X-ray Observatory. The likely existence of such a “cannibal” star provides new insight into how stars and the planets around them may interact as they age.

Released: 19-Aug-2010 10:55 AM EDT
Galactic Super-Volcano in Action
Chandra X-ray Observatory

A galactic “super-volcano” in the massive galaxy M87 is erupting and blasting gas outwards, as witnessed by NASA's Chandra X-ray Observatory and NSF’s NRAO's Very Large Array. The cosmic volcano is being driven by a giant black hole in the galaxy's center and preventing hundreds of millions of new stars from forming.

Released: 21-Jul-2010 2:15 PM EDT
Black Hole Jerked Around Twice
Chandra X-ray Observatory

Scientists have found evidence that a giant black hole has been jerked around twice, causing its spin axis to point in a different direction from before. This discovery, made with new data from NASA's Chandra X-ray Observatory, might explain several mysterious-looking objects found throughout the Universe.

Released: 11-May-2010 11:45 AM EDT
X-Ray Discovery Points to Location of Missing Matter
Chandra X-ray Observatory

Using observations with NASA's Chandra X-ray Observatory and ESA's XMM-Newton, astronomers have announced a robust detection of a vast reservoir of intergalactic gas about 400 million light years from Earth. This discovery is the strongest evidence yet that the “missing matter” in the nearby Universe is located in an enormous web of hot, diffuse gas.

Released: 14-Apr-2010 1:00 PM EDT
Einstein's Theory Fights Off Challengers
Chandra X-ray Observatory

Two new and independent studies have put Einstein's General Theory of  Relativity to the test like never before. These results, made using NASA's Chandra X-ray Observatory, show Einstein's theory is still the best game in town.

Released: 17-Dec-2009 1:00 PM EST
Supernova Explosions Stay in Shape
Chandra X-ray Observatory

A new study of images from NASA's Chandra X-ray Observatory on supernova remnants - the debris from exploded stars - shows that the symmetry of the remnants, or lack thereof, reveals how the star exploded. This is an important discovery because it shows that the remnants retain information about how the star exploded even though hundreds or thousands of years have passed.

Released: 4-Nov-2009 1:00 PM EST
Carbon Atmosphere Discovered on Neutron Star
Chandra X-ray Observatory

Evidence for a thin veil of carbon has been found on the neutron star in the Cassiopeia A supernova remnant. This discovery, made with NASA's Chandra X-ray Observatory, resolves a ten-year mystery surrounding this object.

22-Oct-2009 9:50 AM EDT
Galaxy Cluster Smashes Distance Record
Chandra X-ray Observatory

The most distant galaxy cluster yet has been discovered by combining data from NASA's Chandra X-ray Observatory and optical and infrared telescopes. The cluster is located about 10.2 billion light years away, and is observed as it was when the Universe was only about a quarter of its present age.

Released: 22-Sep-2009 10:00 AM EDT
New Vista of Milky Way Center Unveiled
Chandra X-ray Observatory

A dramatic new vista of the center of the Milky Way galaxy from NASA’s Chandra X-ray Observatory exposes new levels of the complexity and intrigue in the Galactic center. The mosaic of 88 Chandra pointings represents a freeze-frame of the spectacle of stellar evolution, from bright young stars to black holes, in a crowded, hostile environment dominated by a central, supermassive black hole.

Released: 23-Jul-2009 10:15 AM EDT
NASA Celebrates Chandra X-Ray Observatory's 10th Anniversary
Chandra X-ray Observatory

Ten years ago, on July 23, 1999, NASA's Chandra X-ray Observatory was launched aboard the space shuttle Columbia and deployed into orbit. Chandra has doubled its original five-year mission, ushering in an unprecedented decade of discovery for the high-energy universe.

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