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Post Info TOPIC: Markarian 231


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Markarian 231
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Hubble Finds That the Nearest Quasar Is Powered by a Double Black Hole

Astronomers using NASA's Hubble Space Telescope have found that Markarian 231 (Mrk 231), the nearest galaxy to Earth that hosts a quasar, is powered by two central black holes furiously whirling about each other.
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