News tagged with massive galaxy

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M82: 'Survivor' Black Holes May Be Mid-Sized

( -- 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" black ...

dateApr 29, 2010 in Astronomy
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Peering into a gateway opened 50 years ago

Saturday marked the 50th anniversary of the discovery of the quasar - an extremely bright object powered by matter falling into a super-massive black hole lying in the heart of a galaxy.

dateMar 17, 2013 in Astronomy
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Monster galaxies lose their appetite with age

( —Our universe is filled with gobs of galaxies, bound together by gravity into larger families called clusters. Lying at the heart of most clusters is a monster galaxy thought to grow in size by merging with neighboring ...

dateAug 01, 2013 in Astronomy
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A Galaxy Collision in Action

This beautiful image gives a new look at Stephan's Quintet, a compact group of galaxies discovered about 130 years ago and located about 280 million light years from Earth. The curved, light blue ridge running down the center ...

dateJul 09, 2009 in Astronomy
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