Tags Dr. Avi Loeb Extraterrestrial: The First Sign Of Intelligent Life Beyond Earth Oumuamua Avi’s Oumuamua theory space travel pancake shape significance space archaeology illusions Culture scientific method Borisov 2019 plasma physics philosophy Tic Tac experimental physics theoretical physics the ET origin robots Oumuamua purpose Vera Rubin Telescope Observatory navigation purposes ET anomalies Vega region hydrogen iceberg comet differences scientists comfort zone Ort Cloud Oumuamua tumbling speed solar radiation push bumping into it The Pan-STARRS Observatory optimizing searches Breakthrough Starshot Light Sail valuable searches career threatening academic tenure Guest Dr. Abraham (Avi) Loeb Tagline Dr. Loeb talks about his new book, "Extraterrestrial: The First Sign Of Intelligent Life Beyond Earth" View the discussion thread.