Janna Levin: Black Holes, Wormholes, Aliens, Paradoxes & Extra Dimensions | Lex Fridman Podcast #468

Janna Levin is a theoretical physicist and cosmologist specializing in black holes, cosmology of extra dimensions, topology of the universe, and gravitational waves.
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*Transcript:*
https://lexfridman.com/janna-levin-transcript

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*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

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*OUTLINE:*
0:00 – Episode highlight
2:03 – Introduction
3:03 – Black holes
10:37 – Formation of black holes
21:28 – Oppenheimer and the Atomic Bomb
27:50 – Inside the black hole
40:53 – Supermassive black holes
44:22 – Physics of spacetime
47:25 – General relativity
52:56 – Gravity
1:09:29 – Information paradox
1:17:59 – Fuzzballs & soft hair
1:21:10 – ER = EPR
1:27:49 – Firewall
1:36:41 – Extra dimensions
1:39:06 – Aliens
1:54:42 – Wormholes
2:05:40 – Dark matter and dark energy
2:15:43 – Gravitational waves
2:27:51 – Alan Turing and Kurt Godel
2:40:05 – Grigori Perelman, Andrew Wiles, and Terence Tao
2:46:40 – Art and science
2:56:19 – The biggest mystery

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