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The survivors of a 13 billion year old massacre

( -- Our Milky Way galaxy is surrounded by some 200 compact groups of stars, containing up to a million stars each. At 13 billion years of age, these globular clusters are almost as old as the universe itself ...

dateFeb 14, 2012 in Astronomy
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Astronomy team discovers nearby dwarf galaxy

( -- A team led by UCLA research astronomer Michael Rich has used a unique telescope to discover a previously unknown companion to the nearby galaxy NGC 4449, which is some 12.5 million light years from Earth. ...

dateFeb 08, 2012 in Astronomy
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Space Image: Ring of fire

( -- This composite image shows the central region of the spiral galaxy NGC 4151. X-rays (blue) from the Chandra X-ray Observatory are combined with optical data (yellow) showing positively charged hydrogen (H ...

dateDec 28, 2011 in Astronomy
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Close encounters of the galactic kind

( -- 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 ...

dateOct 26, 2011 in Astronomy
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