SPACE PHOTOS THIS WEEK: Planets Collide, Crater, More

SPACE PHOTOS THIS WEEK: Planets Collide, Crater, More
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August 10, 2009--An early black hole--visible via the x-rays it emits (white) in this artist's conception--"starves" as meager amounts of stellar gas (blue) float around it.

New simulations suggest that the energy given off by massive stars in the young universe "blew away" local gas, NASA announced on Monday. Many of these stars would later collapse in on themselves, becoming black holes. But without nearby gases to feed on, these early black holes were slow growing.
— Illustration courtesy KIPAC/SLAC/M. Alvarez, T. Abel and J. Wise
 
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