Astrobiology, the study of life in space, is one of today's fastest growing fields of science. In this accessible and elegantly reasoned book, scholar and researcher Impey explores the foundations of this rapidly developing discipline, where it's going, and what it's likely to find. If Earth is not the only planet, it is so far the only living one that we know of. Impey reveals the incredible proliferation and variety of life on Earth, paying special...

"A thrilling story of science, Nazi research, secret spy planes, and the space race, UFO traces the history of the U.S. government's hunt for 'unidentified aerial phenomena' here on Earth, as well as the group of forward-thinking scientists who launched the search for extraterrestrial intelligence far from Earth. Drawing on original archival research, declassified documents and interviews with intelligence and military officials, Graff's book traces...