Janna Levin is a theoretical physicist and cosmologist specializing in black holes, cosmology of extra dimensions, topology of the universe, and gravitational waves.
Thank you for listening ❤ Check out our sponsors: https://lexfridman.com/sponsors/ep468-sc
See below for timestamps, transcript, and to give feedback, submit questions, contact Lex, etc.

Transcript:
https://lexfridman.com/janna-levin-transcript

CONTACT LEX:
Feedback – give feedback to Lex: https://lexfridman.com/survey
AMA – submit questions, videos or call-in: https://lexfridman.com/ama
Hiring – join our team: https://lexfridman.com/hiring
Other – other ways to get in touch: https://lexfridman.com/contact

EPISODE LINKS:
Janna’s X: https://x.com/JannaLevin
Janna’s Website: https://jannalevin.com
Janna’s Instagram: https://instagram.com/jannalevin
Janna’s Substack: https://substack.com/@jannalevin
Black Hole Survival Guide (book): https://amzn.to/3YkJzT5
Black Hole Blues (book): https://amzn.to/42Nw7IE
How the Universe Got Its Spots (book): https://amzn.to/4m5De8k
A Madman Dreams of Turing Machines (book): https://amzn.to/3GGakvd

SPONSORS:
To support this podcast, check out our sponsors & get discounts:
Brain.fm: Music for focus.
Go to https://brain.fm/lex
BetterHelp: Online therapy and counseling.
Go to https://betterhelp.com/lex
NetSuite: Business management software.
Go to http://netsuite.com/lex
Shopify: Sell stuff online.
Go to https://shopify.com/lex
AG1: All-in-one daily nutrition drink.
Go to https://drinkag1.com/lex

OUTLINE:
(00:00) – Introduction
(00:51) – Sponsors, Comments, and Reflections
(09:21) – Black holes
(16:55) – Formation of black holes
(27:45) – Oppenheimer and the Atomic Bomb
(34:08) – Inside the black hole
(47:10) – Supermassive black holes
(50:39) – Physics of spacetime
(53:42) – General relativity
(59:13) – Gravity
(1:15:47) – Information paradox
(1:24:17) – Fuzzballs & soft hair
(1:27:28) – ER = EPR
(1:34:07) – Firewall
(1:42:59) – Extra dimensions
(1:45:24) – Aliens
(2:01:00) – Wormholes
(2:11:57) – Dark matter and dark energy
(2:22:00) – Gravitational waves
(2:34:08) – Alan Turing and Kurt Godel
(2:46:23) – Grigori Perelman, Andrew Wiles, and Terence Tao
(2:52:58) – Art and science
(3:02:37) – The biggest mystery

PODCAST LINKS:
– Podcast Website: https://lexfridman.com/podcast
– Apple Podcasts: https://apple.co/2lwqZIr
– Spotify: https://spoti.fi/2nEwCF8
– RSS: https://lexfridman.com/feed/podcast/
– Podcast Playlist: https://www.youtube.com/playlist?list=PLrAXtmErZgOdP_8GztsuKi9nrraNbKKp4
– Clips Channel: https://www.youtube.com/lexclips

Tatán Fernández | ¿Por qué necesitamos escuelas en la naturaleza? | 86