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Lex Fridman· 5. Mai 2025Podcast · 2 StimmenA Black Hole Is a Place, Not a ThingGast: Janna Levin · Moderation: Lex FridmanTheoretical physicist Janna Levin tells Lex Fridman why the event horizon is empty spacetime, why Hawking’s radiation started a war over information, and why gravity itself may not be fundamental.
2:35:24ENLex Fridman· 22. Apr. 2024Podcast · 2 StimmenThe Equation Was Smarter Than EinsteinGast: Sean Carroll · Moderation: Lex FridmanSean Carroll tells Lex Fridman why general relativity is the most beautiful theory in physics, and why its equation predicted black holes, gravitational waves, and the Big Bang before anyone, including Einstein, understood them.
2:19:34ENLex Fridman· 15. Feb. 2023Podcast · 2 StimmenEinstein Gave Black Holes a C-Minus. Strominger Still Bets the Farm on the Next WrinkleGast: Andrew Strominger · Moderation: Lex FridmanHarvard theorist Andrew Strominger on why singularities are a gift, why string theory is a stepping stone rather than a verdict, and why the holographic principle is still imprecisely defined.
2:13:16ENLex Fridman· 23. Juli 2022Podcast · 2 StimmenEvery Atom in Your Body Was Forged in a Dead StarGast: Martin Rees · Moderation: Lex FridmanMartin Rees talks Lex Fridman through dark matter, alien life, one-way Mars trips, and why this century is the first in which one species holds the planet.
2:22:55ENLex Fridman· 23. Aug. 2021Podcast · 2 StimmenLIGO measures a thousandth of a proton — then a thousand physicists stayed quiet for a monthGast: Barry Barish · Moderation: Lex FridmanNobel laureate Barry Barish tells Lex Fridman how gravitational waves were predicted, doubted, and finally heard with the most precise machine ever built.
2:51:17ENLex Fridman· 13. Jan. 2021Podcast · 2 StimmenOumuamua Wasn't Supposed to Exist. Avi Loeb Wants a Photograph Next Time.Gast: Avi Loeb · Moderation: Lex FridmanHarvard astrophysicist Avi Loeb tells Lex Fridman why the first interstellar visitor looks more like a lightsail than a rock — and why that question is still treated as unscientific.
57:30ENLex Fridman· 26. Sept. 2019Podcast · 2 Stimmen400 Spins in a Pocket, and a Universe Too Small to Store ThemGast: Leonard Susskind · Moderation: Lex FridmanLeonard Susskind tells Lex Fridman why quantum computers are not faster laptops, why string theory is a tool rather than a citizenship, and why nobody should claim to have found the bottom of the well.
12:52ENLex FridmanPodcast · 2 StimmenRoger Penrose on a Universe That Restarts: When the Far Future Becomes the Next Big BangGast: Roger Penrose · Moderation: Lex FridmanPenrose explains conformal cyclic cosmology, in which the remote future of one cosmic eon is mathematically the same as the Big Bang of the next.