The nearby Andromeda Galaxy, 2.5 million light-years away, contains a (1.1–2.3) × 10^8 (110-230 million) solar mass central black hole, significantly larger than the Milky Ways. The largest supermassive black hole in the Milky Ways neighborhood appears to be that of M87, weighing in at (6.4 ± 0.5) × 10^9(~6.4 billion) solar masses at a distance of 53.5 million light- years. On 5 December 2011 astronomers discovered the largest supermassive black hole yet found, that of NGC 4889, weighing in at 21 billion solar masses at a distance of 336 million light-years away in the constellation Coma.
Posted on: Tue, 29 Jul 2014 19:15:59 +0000
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