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Distant Black Hole Spins at Half the Speed of Light


Craig

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http://news.discovery.com/space/galaxies/distant-black-hole-spins-half-the-speed-of-light-140305.htm


 



Analyzing four magnified images created by the lens galaxy -- an elliptical galaxy about 3 billion light years away -- Reis and colleagues found that the quasar’s black hole is spinning at half the speed of light.


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