<ul><li>Monster black hole M87, one of the largest in our vicinity, spinning at 80% of the theoretical maximum speed possible in the universe, with its inner edge of accretion disk moving at about 14% the speed of light.</li><li>Scientists calculated the rotation speed by studying the 'bright spot' in the black hole images caused by relativistic Doppler beaming, measuring the brightness difference.</li><li>Matter is falling into the black hole at roughly 23% the speed of light, with the black hole consuming material equivalent to 0.00004 to 0.4 solar masses annually, operating below the 'Eddington limit.'</li><li>The energy from the in-falling material matches the power output of M87's jet, supporting the theory that the jet is powered by the black hole's feeding process, representing a significant step in understanding supermassive black holes.</li></ul>

Monster black hole M87 is spinning at 80% of the cosmic speed limit — and pulling in matter even faster

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