The #1 Clue to Quantum Gravity Sits on the Surfaces of Black Holes

Karl Schwarzschild first stumbled upon black holes in 1916, but for a long time they weren’t really a thing. “Black holes were discovered as a purely geometric object — in a sense, just empty space. Nothing,” said Yuk Ting Albert Law, a theoretical physicist at Stanford University. A mathematical oddity that popped out of Albert Einstein’s general theory of relativity, a black hole is the space…

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