If the Universe is Teeming with Aliens... Where is Everybody?: Fifty Solutions to the Fermi Paradox and the Problem of Extraterrestrial Life

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Given the fact that there are perhaps 400 million stars in our Galaxy alone, and perhaps 400 million galaxies in the Universe, it stands to reason that somewhere out there, in the 14-billion-year-old cosmos, there is or once was a civilization at least as advanced as our own. The sheer enormities of the numbers almost demand that we accept the truth of this hypothesis. Why, then, have we encountered no evidence, no messages, no artifacts of these extraterrestrials? Webb discusses in detail the 50 most cogent and intriguing solutions to Fermi's famous paradox: If the numbers strongly point to the existence of extraterrestrial civilizations, why have we found no evidence of them? Where Is Everybody?....Pages 1-5 Of Fermi and Paradox....Pages 7-25 They Are Here....Pages 27-59 They Exist But Have Not Yet Communicated....Pages 61-140 They Do Not Exist....Pages 141-232 Conclusion....Pages 233-240 Notes and Further Reading....Pages 241-274 References....Pages 275-282