Uploaded October 2021 | Updated September 2026, 3 weeks ago

---

How is it possible for galaxies and objects in space to move away from us faster than the speed of light? Will we ever see those objects?
Check out 3M's Young Scientist Challenge! bit.ly/3MxDianna

Support Physics Girl videos → patreon.com/physicsgirl

Special thank you to our X-Ray tier patrons: Carlos Patricio, David Cichowski, Eddie Sabbah, Fabrice Eap, Gil Chesterton, Isabel Herstek, Margaux Lopez, Matt Kaminski, Michael Schneider, Patrick Olson, Vikram Bhat, Vincent Argiro, wc993219

If you liked this video check out these:
A picture of the beginning of the universe
→ youtube.com/watch?v=rut6fr28TlE
Why is the Universe Flat? ft. Prof Alan Guth
→ youtube.com/watch?v=MTUsOWtxKKA

physicsgirl.org
twitter.com/thephysicsgirl
facebook.com/thephysicsgirl
instagram.com/thephysicsgirl

Creator/Host: Dianna Cowern
Editor: Levi Butner
Cosmology Consultant: Dr. Ethan Siegel