“Extraterrestrial,” by the Harvard astrophysicist Avi Loeb, makes the case for intelligent life in outer space — and for evidence that it may have visited us not long ago.“Extraterrestrial,” by the Harvard astrophysicist Avi Loeb, makes the case for intelligent life in outer space — and for evidence that it may have visited us not long ago.Read MoreBooks and Literature, Space and Astronomy, Extraterrestrial Life, Loeb, Abraham (1962- ), Extraterrestrial: The First Sign of Intelligent Life Beyond Earth (Book)
