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Harvard-Smithsonian Center for Astrophysics

Supermassive Black Hole Spins Super-Fast

27 Feb 2013, 18:24 UTC
Supermassive Black Hole Spins Super-Fast

February 27, 2013: Imagine a sphere more than 2 million miles across - eight times the distance from Earth to the Moon - spinning so fast that its surface is traveling at nearly the speed of light.

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