Andrew Strominger is a theoretical physicist at Harvard. Please support this podcast by checking out our sponsors: - Eight Sleep: https://www.eightsleep.com/lex to get special savings - Rocket Money: https://rocketmoney.com/lex - Indeed: https://indeed.com/lex to get $75 credit - ExpressVPN: https://expressvpn.com/lexpod to get 3 months free EPISODE LINKS: Andrew's website: https://www.physics.harvard.edu/people/facpages/strominger Andrew's papers: Soft Hair on Black Holes: https://arxiv.org/abs/1601.00921 Photon Rings Around Warped Black Holes: https://arxiv.org/abs/2211.01674 PODCAST INFO: Podcast website: https://lexfridman.com/podcast Apple Podcasts: https://apple.co/2lwqZIr Spotify: https://spoti.fi/2nEwCF8 RSS: https://lexfridman.com/feed/podcast/ Full episodes playlist: https://www.youtube.com/playlist?list=PLrAXtmErZgOdP_8GztsuKi9nrraNbKKp4 Clips playlist: https://www.youtube.com/playlist?list=PLrAXtmErZgOeciFP3CBCIEElOJeitOr41 OUTLINE: 0:00 - Introduction 1:12 - Black holes 6:16 - Albert Einstein 25:44 - Quantum gravity 29:56 - String theory 40:44 - Holographic principle 48:41 - De Sitter space 53:53 - Speed of light 1:00:40 - Black hole information paradox 1:08:20 - Soft particles 1:17:27 - Physics vs mathematics 1:26:37 - Theory of everything 1:41:58 - Time 1:44:24 - Photon rings 2:00:05 - Thought experiments 2:08:26 - Aliens 2:14:04 - Nuclear weapons SOCIAL: - Twitter: https://twitter.com/lexfridman - LinkedIn: https://www.linkedin.com/in/lexfridman - Facebook: https://www.facebook.com/lexfridman - Instagram: https://www.instagram.com/lexfridman - Medium: https://medium.com/@lexfridman - Reddit: https://reddit.com/r/lexfridman - Support on Patreon: https://www.patreon.com/lexfridman