An alien machine already visited us, Harvard astrophysicist still contends

Harvard astrophysicist Avi Loeb says he has found good evidence for alien technology in the solar system, what could be called alien garbage, and that some other scientists don’t take his ideas seriously because of “groupthink.” In his new book “Extraterrestrial: The First Sign of Intelligent Life Beyond Earth” (Houghton Mifflin Harcourt), set to be […]