“Ex-Machina Universes” –Astrophysicists Create Millions of Alien Worlds



If our universe is unnatural and fine-tuned for life, observes physicist Nima Arkani-Hamed at the Institute for Advanced Studies, “the lucky outcome of a cosmic roulette wheel, then it stands to reason that a vast and diverse ‘multiverse’ of universes must exist beyond our reach — the lifeless products of less serendipitous spins. This multiverse renders our universe impossible to fully understand on its own terms.”