16 ene. 2015

Weekender: Black Holes to Rip Galaxy Apart--or has It Already Happened?




At the center of every galaxy – according to Einstein’s theory of general relativity – sits a light-sucking black hole that weighs the equivalent of millions or even billions of suns. Though normally quiescent, they can eat stars and gas for breakfast and belch quasars brighter than their own galaxy.



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