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Neighboring black hole puts on weight

Galaxy M87's massive heart far weighs as much as 6.6 billion suns

6:10pm, January 12, 2011

SEATTLE — Astronomers have determined with high precision that the black hole at the heart of the nearby galaxy M87 weighs the equivalent of 6.6 billion suns. The finding makes the monster the most massive known in Earth’s cosmic neighborhood and the heaviest black hole measured so far using the orbits of stars.

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