Avi Loeb, PhD, is a theoretical physicist and Frank B. Baird, Jr., Professor of Science at Harvard University. He is the author of several books, the most recent of which is "Interstellar: The Search for Extraterrestrial Life and Our Future in the Stars." https://lweb.cfa.harvard.edu/~loeb/ Buy 1 Get 1 Free Trucker Hat with code ROGAN at https://happydad.com A House of Dynamite, now streaming only on Netflix. Learn more about your ad choices. Visit podcastchoices.com/adchoices