Is Anybody out There?: An Assessment of the Probability of the Existence of Extraterrestrial Technological Civilizations Or

Are we alone? Or is the universe teeming with intelligent life? Can we expect extraterrestrial civilizations to be common? Occasional? Rare? In this wide-ranging Assessment, historian/writer W. H. Collier explores the probabilities of the existence of extraterrestrial, technological life based on the latest scientific findings. Not content with the well-worn assertion that life must be common because there are so many stars and planets, Collier undertakes a thorough analysis of just what it...