Astrophysicst Ezequiel Treister and colleagues pored over hundreds of images from Chandra X-Ray Observatory, carefully tracking tiny amounts of x-ray photons originating from extremely distant (and therefore ancient) black holes at the cores of galaxies. What they discovered was that the origins of these black holes had been largely obscured by billowing clouds of gas around them as galaxies formed. But keener observation revealed that the black holes had most likely been part of these galaxies from very early in the formation of the universe — perhaps as early as a billion years after the Big Bang.
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