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$PDF$/READ/DOWNLOAD If the Universe Is Teeming with Aliens ... WHERE IS EVERYBODY?: Seventy-Five Solutions to the Fermi Paradox and the Problem of Extraterrestrial Life | Given the fact that there are perhaps 400 billion stars in our Galaxy alone, and perhaps400 billion galaxies in the Universe, it stands to reason that somewhere out there, in the14-billion-year-old cosmos, there is or once was a civilization at least