09-November-2004, 06:53 PM
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Vulcan Administrator
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Join Date: Oct 2001
Location: Greenbelt, MD
Posts: 26,032
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Black Holes or Galaxies, Which Came First?
Black Holes or Galaxies, Which Came First?
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Since supermassive black holes were first discovered, astronomers have been wondering if the hole was created first, and then the galaxy formed around it, or if these monsters tend to form at the heart of galaxies over time. Astronomers using the National Radio Astronomy Observatory's Very Large Array have discovered a distant galaxy that's less than a billion years old, but seems to have a supermassive black hole - but no massive bulge of stars. The black hole is 1 billion solar masses, so it should be surrounded by several trillion solar masses in stars. This provides evidence that it's the black hole that forms first, then the galaxy.
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