Astronomers have measured the rate of spin of a supermassive black hole for the first time - and it is big.
Measurements undertaken with two space-based X-ray telescopes imaged the black hole at the centre of galaxy NGC 1365.
The spin measurement, published in Nature, gives precious clues as to how the black hole grew and achieved supermassive status.
http://www.bbc.co.uk...onment-21607945
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First glimpse of a black hole's spin
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Still Waters
, Feb 27 2013 11:05 PM
black hole spin ngc 1365
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