What would happen if you could travel billions or even quintillions of years into the future? Would you witness the birth of new galaxies, the death of stars, or the end of the universe itself? From the Milkdromeda galaxy to a universe that begins shrinking, this episode explores the most extreme possibilities of cosmic time and takes you beyond everything we know about the past, present, and future of our universe. 00:00 - What If You Traveled 10 Quintillion Years Into the Future? 19:28 - The Rarest Space Events We’ll See In Our Lifetime (and the Ones We’ll Unfortunately Miss) 41:22 - What If You Traveled One Billion Years Into the Future? 49:54 - What If You Woke Up 5 Billion Years in the Future? 1:09:29 - What if you lived through Milkdromeda? 1:32:26 - What If The Universe Stopped Expanding And Started Shrinking? 1:52:34 - What If You Traveled to Before the Big Bang? 👍 Enjoyed the video? Hit LIKE and comment below: Which cosmic apocalypse scenario scares you the most? Dive even deeper into the world of science and discovery with Popular Science, the free streaming channel bringing you more of what you love from What If, plus epic explorations in engineering, rocket launches, movies, space, and Earth sciences https://underknown.com/popularscience/ Support us on Patreon: https://www.patreon.com/whatifshow/membership 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/ NUGABYMSNFFFZU7D 0GWVSHHOVSTAV0ZL 9AY5EFPHMA2FZLLF #whatif #science #earth #universe #cosmos