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 perhaps 400 billion 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 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 in depth 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 Fermi Paradox. … For anyone who enjoys a good detective story or using their thinking faculties and stretching the imagination to the limits … Where is everybody’ will be enormously informative and entertaining. … Read this book and whatever your views are about life elsewhere in the Universe your appreciation for how special life is here on Earth will be enhanced! A worthy addition to any personal library. (Philip Bridle BBC Radio March 2003) Since gaining a BSc in physics from the University of Bristol and a PhD in theoretical physics from the University of Manchester Stephen Webb has worked in a variety of universities in the UK. He is a regular contributor to the Yearbook of Astronomy series and has published an undergraduate textbook on distance determination in astronomy and cosmology as well as several popular science books. His interest in the Fermi paradox combines lifelong interests in both science and science fiction