"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...

"From Aristotle to Stephen Hawking, some of the most prominent Western scientists have had definite perceptions and misperceptions about the existence of civilized life on other planets. Johannes Kepler, who transformed astronomy with his work on the shape of planetary orbits, was quite sure that engineers on the Moon excavated circular pits to provide shelter for lunar inhabitants. Christian Huygens, the most prominent scientist between Galileo and...