Black Holes May Come in Medium, Pair of Studies Suggest

November 28, 2013 2:25 PM

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Researchers have identified what may be the first examples of medium-sized black holes.

For years, scientists could only point to small and large black holes -- either they were the corpses of stars bigger than our Sun, or the supermassive hearts of galaxies, where they steadily reeled in all surrounding material. Now NASA's Nuclear Spectroscopic Telescope Array (NuSTAR) is hard at wor...

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