Support us on Patreon: https://www.patreon.com/whatifshow/membership Let's step back. 2 billion years back into Earth's evolution. A time full of life. But also mass extinction. An invisible threat was on the loose, ready to change the course of history. This was a time on Earth that directly impacted what the world is like today. 00:00 Countdown 00:56 What If You Traveled 10 Quintillion Years Into the Future? 20:20 The Most Painful Deaths in Space 38:05 The Most Terrifying Planets in the Universe 59:36 What If We Settled on an Exoplanet? - with Didier Queloz 01:13:33 What If You Landed on Proxima Centauri b? 01:26:25 What If You Landed on Kepler-22 b? 01:37:02 What If You Traveled to Gliese 12 b? 01:48:53 What If You Visited the Galaxy’s Most Dangerous Planet? 01:58:14 What If the Milky Way and Andromeda Galaxies Collided? 02:01:36 What If You Fell Into Saturn? 02:20:45 What If We Swapped Our Sun With Other Objects in The Universe? 02:40:17 What If The Planets Changed Positions? 02:53:26 What If We Found Alien Life on K2-18 b? Check out our other channels: How to Survive: https://bit.ly/how-to-survive-show Animalogic: https://www.youtube.com/@UCwg6_F2hDHYrqbNSGjmar4w Aperture: https://bit.ly/aperture-show T-shirts and merch: http://bit.ly/whatifstore What If elsewhere: Instagram: http://bit.ly/whatif-instagram Discord: https://discord.gg/Bj5UnspbwE Podcast: http://bit.ly/yt-what-if-show-podcast What If is a mini-documentary web series that takes you on an epic journey through hypothetical worlds and possibilities. Join us on an imaginary adventure through time, space and chance while we (hopefully) boil down complex subjects in a fun and entertaining way. Contact us at https://underknown.com/contact/ I6J26YHTVWMMTBCT #whatif #earth #edge #universe