Amazing black holes detected

SPACE.com
Bizarre Black Holes Explained: Q & A With Physicist Kip Thorne

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Two X-ray space observatories, NASA's Nuclear Spectroscopic Telescope Array (NuSTAR) and the European Space Agency's XMM-Newton, have teamed up to measure definitively, for the first time, the spin rate of a black hole with a mass 2 million times that of our sun. (NASA)

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