Alex Filippenko is an astrophysicist and professor of astronomy at Berkeley. Please support this podcast by checking out our sponsors: - Neuro: https://www.getneuro.com and use code LEX to get 15% off - BetterHelp: https://betterhelp.com/lex to get 10% off - MasterClass: https://masterclass.com/lex to get 15% off annual sub - Cash App: https://cash.app/ and use code LexPodcast to get $10 EPISODE LINKS: Alex's Website: https://astro.berkeley.edu/people/alex-filippenko/ 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 2:08 - Universe expansion 3:32 - Dark energy 11:00 - Scientific revolutions 22:50 - Asteroid hitting Earth 26:22 - Giant solar flares and the power grid 33:22 - Elon Musk and space exploration 38:13 - Exoplanets 45:35 - Traveling close to the speed of light 47:45 - Traveling faster than the speed of light 56:11 - Intelligent life in the universe 59:46 - Fermi Paradox 1:09:24 - Finding alien life would be bad news 1:14:20 - UFO sightings 1:27:30 - Universe expansion speed 1:32:14 - The universe is infinite 1:36:30 - What happened before the Big Bang? 1:40:46 - Roger Penrose 1:44:20 - Nobel Prize for the accelerating universe 2:05:55 - Supernova 2:17:19 - The greatest story ever told 2:21:16 - Richard Feynman 2:28:09 - Meaning of life CONNECT: - Subscribe to this YouTube channel - Twitter: https://twitter.com/lexfridman - LinkedIn: https://www.linkedin.com/in/lexfridman - Facebook: https://www.facebook.com/LexFridmanPage - Instagram: https://www.instagram.com/lexfridman - Medium: https://medium.com/@lexfridman - Support on Patreon: https://www.patreon.com/lexfridman