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SlideshowReport

Galaxies Forming by Combining Smaller Units

Description
Galaxies Forming by Combining Smaller Units
(c) The Chandra X-ray telescope imaged gravitationally
bound gas around the distant galaxy 3C 294. The
X-ray emission from this gas is the signature of an extremely
massive cluster of galaxies, in this case, at a distance of about
11.2 billion ly from us.
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