Roger Penrose: Time, Black Holes, and the Cosmos

Nobel Laureate Roger Penrose joins Brian Greene to explore some of his most iconic insights into the nature of time, black holes, and cosmological evolution. Moderator: Brian Greene Participant: Sir Roger Penrose 00:00 - Introduction 00:49 - Participant Introduction 02:02 - A Working Definition of Time 07:25 - Applying Entropy and The Second Law to the Directionality of Time 16:37 - What The Early Universe May Have Looked Like 20:27 - Solving the Puzzle of The Past Hypothesis 31:46 - Investigating Exponential Expansion 38:50 - New Discoveries and Discourse Since 2004 55:41 - A Peek Into Sir Roger Penrose’s Continuing Research 01:08:17 - Credits - SUBSCRIBE to our YouTube Channel and "ring the bell" for all the latest videos from WSF - VISIT our Website: http://www.worldsciencefestival.com - LIKE us on Facebook: https://www.facebook.com/worldsciencefestival - FOLLOW us on Twitter: https://twitter.com/WorldSciFest #worldsciencefestival #Briangreene #Rogerpenrose #blackholes #cosmology