Lex Fridman PodcastKonstantin Batygin: Planet 9 and the Edge of Our Solar System | Lex Fridman Podcast #201
Episode Details
EPISODE INFO
- Released
- July 19, 2021
- Duration
- 2h 39m
- Channel
- Lex Fridman Podcast
- Watch on YouTube
- ▶ Open ↗
EPISODE DESCRIPTION
Konstantin Batygin is a planetary astrophysicist at Caltech. Please support this podcast by checking out our sponsors:
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EPISODE LINKS: Konstantin's Twitter https://twitter.com/kbatygin Konstantin's Website https://www.konstantinbatygin.com/ 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 1:18 - Overview of our Solar System 16:16 - What is the Oort Cloud? 21:11 - Life in the interstellar medium 22:44 - Are there aliens out there? 25:23 - How unique is Earth? 28:04 - Did Jupiter destroy early planets? 34:18 - How hard is it to simulate the Universe? 38:50 - Quantum mechanics in evolution of objects in the Solar system 43:17 - Simulating the first formations around the Sun 49:04 - Will it be possible to simulate the full history of the Solar System? 51:24 - How far should we go with the simulation? 53:45 - Increasing immersion in video games 1:00:10 - What is Planet Nine? 1:06:39 - The origin of life 1:09:03 - Evidence of Planet Nine 1:11:33 - Discovery of Neptune 1:12:43 - When will we find Planet Nine? 1:15:22 - Planet Nine throws rocks into the Kuiper Belt 1:19:17 - Could Planet Nine be a primordial black hole? 1:29:21 - Commercial space revolution boosts science and the human condition 1:36:48 - Solving sex in space 1:37:26 - Would humans evolve if we couldn't see the stars? 1:43:09 - Military funding and science 1:47:13 - Is Oumuamua space junk from a distant alien civilization? 2:00:35 - Wild ideas create the future 2:08:24 - The perfect place to die 2:10:05 - Greatest song of all time 2:16:35 - Music enables science for Konstantin 2:18:53 - Music practice tips for busy people 2:22:43 - Memories of 1990s Russia 2:29:15 - Advice for young people 2:35:11 - Meaning of life SOCIAL:
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SPEAKERS
Lex Fridman
hostKonstantin Batygin
guestNarrator
other
EPISODE SUMMARY
In this episode of Lex Fridman Podcast, featuring Lex Fridman and Konstantin Batygin, Konstantin Batygin: Planet 9 and the Edge of Our Solar System | Lex Fridman Podcast #201 explores planet Nine, cosmic architecture, and why useless knowledge matters profoundly Lex Fridman and Caltech astrophysicist Konstantin Batygin discuss the evidence for a hypothetical Planet Nine, a five‑Earth‑mass world in a 10,000‑year orbit that may sculpt the orbits of distant Kuiper Belt objects. They explore the structure of the solar system—from inner planets to the Kuiper Belt and Oort Cloud—and how disk physics, chaos, and planetary migration likely shaped Earth’s rarity. The conversation branches into simulations, quantum analogies for astrophysical disks, interstellar visitors like ‘Oumuamua, and whether Planet Nine could instead be a primordial black hole. They close with reflections on aliens, AI, the value of “useless” science, immigration, creativity, music, and how passion, not checklists, should drive a life in science.
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