Podcast Guide
Video thumbnail for #468 – Janna Levin: Black Holes, Wormholes, Aliens, Paradoxes & Extra Dimensions — Lex Fridman Podcast

#468 – Janna Levin: Black Holes, Wormholes, Aliens, Paradoxes & Extra Dimensions

Lex Fridman Podcast

Published
May 5, 2025
Duration
3h 0m
Summary source
youtube captions
Last updated
Apr 21, 2026

Black holes curve space and time around them in the way that we've been describing.

Summary

Black holes curve space and time around them in the way that we've been describing. Things follow along the curves in space. If the black holes move around, the curves have to follow them, right? But they can't travel faster than the speed of light either. So what happens is black holes, let's say, move around. Maybe I've got two black holes in orbit around each other. That can happen. It takes a while. A wave is created in the actual shape of space. And that wave follows …

Show notes

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

Themes

  • society
  • culture
  • Black holes curve space and time around them in the way that we've been describing
  • Things follow along the curves in space
  • If the black holes move around, the curves have to follow them, right