Chandra X-ray Center

How often do giant black holes become hyperactive?

(PhysOrg.com) -- 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 ...

dateDec 20, 2010 in Astronomy
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An Intergalactic Weather Map

(PhysOrg.com) -- This composite image shows an intergalactic "weather map" around the elliptical galaxy NGC 5813, the dominant central galaxy in a galaxy group located about 105 million light years away from ...

dateDec 08, 2010 in Astronomy
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Pushing the envelope

(PhysOrg.com) -- G327.1-1.1 is the aftermath of a massive star that exploded as a supernova in the Milky Way galaxy.

dateOct 05, 2010 in Astronomy
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Chandra finds evidence for stellar cannibalism

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 ...

dateSep 14, 2010 in Astronomy
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Image: The Heart of a Rose

(PhysOrg.com) -- This composite image shows the Rosette star formation region, located about 5,000 light years from Earth.

dateSep 08, 2010 in Astronomy
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Cluster collisions switch on radio halos

(PhysOrg.com) -- This is a composite image of the northern part of the galaxy cluster Abell 1758, located about 3.2 billion light years from Earth, showing the effects of a collision between two smaller galaxy ...

dateAug 30, 2010 in Astronomy
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Black Hole Gets Jerked Around -- Twice

(PhysOrg.com) -- 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 ...

dateJul 21, 2010 in Astronomy
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M82: 'Survivor' Black Holes May Be Mid-Sized

(PhysOrg.com) -- New evidence from NASA's Chandra X-ray Observatory and ESA's XMM-Newton strengthens the case that two mid-sized black holes exist close to the center of a nearby starburst galaxy. These "survivor" ...

dateApr 29, 2010 in Astronomy
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Supernova explosions stay in shape

At a very early age, children learn how to classify objects according to their shape. Now, new research suggests studying the shape of the aftermath of supernovas may allow astronomers to do the same.

dateDec 17, 2009 in Astronomy
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