Given the fact that there are perhaps 400 billion stars in our Galaxy alone, and perhaps 400 billion galaxies in the Universe, it stands to reason that somewhere out there, in the 14billionyearold cosmos, there is or once was a civilization at least as advanced as our own. The sheer enormity of the numbers almost demands that we accept the truth of this hypothesis. Why, then, have we encountered no evidence, no messages, no artifacts of these extraterrestrials? In this second, significantly revised and expanded edition of his widely popular book, Webb discusses in detail the (for now!) 75 most cogent and intriguing solutions to Fermis famous paradox If the numbers strongly point to the existence of extraterrestrial civilizations, why have we found no evidence of them?Reviews from the first edition"Amidst the plethora of books that treat the possibility of extraterrestrial intelligence, this one by Webb ... is outstanding. ... Each solution is presented in a very logical, interesting, thorough manner with accompanying explanations and notes that the intelligent layperson can understand. Webb digs into the issues ... by considering a very broad set of indepth solutions that he addresses through an interesting and challenging mode of presentation that stretches the mind. ... An excellent book for anyone who has ever asked Are we alone?." (W. E. Howard III, Choice, March, 2003)"Fifty ideas are presented ... that reveal a clearly reasoned examination of what is known as The...

Binding: Paperback;452 pages; Publisher: Springer Nature B.V.; Classification: PG; Weight: 786 g; Dimensions: 229 x 150 x 24

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