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========== Black holes are the largest collections of pure violent energy in the universe. If you come too close, they'll devour you and add your energy to their collection. And so, the energy is lost to us forever. Or is it? It turns out there's a universe cheat code. A way of powering civilizations until the very death of everything, or of constructing the largest bomb in the universe. But how? Didn't we learn that all energy is trapped forever in black holes, even light? This is true. Everything you think you know about the weirdest thing in the universe is about to get weirder, for one simple reason: Black holes are spinning. When really really massive stars die, their cores collapse under their own gravity into black holes. This means something ...