[Interview+] How Much Gravity Is Too Much To Escape A Planet?

<html><p>BONUS PART STARTS AT 20:51</p><p>Watch here (with no ads) or on YouTube: <a href="youtu.be/QD5sJ636wxM"; target="_blank">youtu.be/QD5sJ636wxM</a></p><p&… interviews: <a href="patreon.com/collection/44300/"; target="_blank">patreon.com/collection/44300/</a></p&… Guest: Dr. Sanjoy Som <a href="bluemarblespace.org/"; target="_blank">bluemarblespace.org/</a>; </p><p>📜 Multistage Rocket Optimization, Geophysics, and the Spacefaring Envelope of Habitable Super-Earths <a href="arxiv.org/abs/2607.02691"; target="_blank">arxiv.org/abs/2607.02691</a></p>&l… fight against gravity to help us as a civilization escape into space. But what if a planet is much heavier? How big and dense does it need to get before a civilization gets permanently trapped and can't go to space?</p><ul><li><p>00:00 Intro </p></li><li><p>01:16 Escaping the gravity well </p></li><li><p>06:53 Limiting factors </p></li><li><p>09:47 Rockets </p></li><li><p>15:18 Can a civilizations get trapped </p></li><li><p>20:51 Geology-driven civilization </p></li><li><p>32:54 Current obsessions </p></li><li><p>39:11 Final thoughts</p></li></ul><p></p></html>