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NASA: sound of a black hole

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Uploaded on Sep 25, 2008

Watch a NASA animation zooming in on a black hole as you listen to black hole sounds. The sounds are X-ray data from GRS 1915+105, translated into audible pulsations by MITs Edward Morgan.

http://www.msnbc.msn.com/id/24111670/...

This black hole is a near-extremal Kerr black hole. See how to microscopically calculate the entropy of this black hole using string theory methods:

http://motls.blogspot.com/2008/09/mic...

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