What are protons, neutrons, and electrons made out of? That’s what listener Xander wants to know. Physics expert Aatish Bhatia takes us on a journey into the atom, and explains how scientists discover things that are too small to see. You’ll find out how Albert Einstein helped prove the existence of atoms, and why physicists smash particles like piñatas in massive tunnels.

You can learn more about how particle colliders work in our interview with Aatish, available for Patrons who pledge at the $1/level or higher, on patreon.com/tumblepodcast.

We have free resources available on the blog post on our website, sciencepodcastforkids.com.