#197 - Brian Keating - What Came Before the Big Bang & Does Time Exist?

Brian Keating joins me to explore one of the deepest unanswered questions in physics: what is time, and why does it only appear to move in one direction? Brian argues that time may not exist as a fundamental feature of reality and explains why understanding space, matter and energy does not mean we understand the universe itself. We discuss what may have existed before the Big Bang, why something cannot truly come from nothing and how Brian’s work with the Simons Observatory could detect gravitational waves produced during the universe’s earliest moments. Brian also expl...