In this episode, we talk with astrophysicist Avi Loeb about what he thinks we might find in the observable universe. Will it be biosignatures that will reveal extraterrestrial life? Or technosignatures, evidence of a past or present alien technology? Join us as he discusses his latest book Life in Cosmos: From Biosignatures to Technosignatures, the possibilities of self-replicating, artificial intelligent von Neumann probes, and the absurdness - or not - of eating aliens! Professor Avi Loeb is the Director of the Harvard Smithsonian Center for Astrophysics. He received his PhD in plasma physics at the Hebrew University of Jerusalem, and worked as a theoretical astrophysicist at Princeton Institute of Advanced Study. Loeb is a New York Times bestselling author, chairs the Breakthrough Starshot Initiative, and founded the current Galileo Project advancing the search for extraterrestrial life.