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Theoretical physicist Michio Kaku doesn’t just hope that humanity finds its way onto other planets… he’s even picked out the ones we should be moving to — Proxima Centauri B, in the Alpha Centauri triple star system. He’s even suggested that the next great space exploration could happen on a spaceship the size of a postage stamp, traveling 20% the speed of light, sent by using high-powered lasers. It sounds like a wild theory, but if anyone’s wild theories could come true in the next 100 years, it’s probably Michio Kaku.