Ask a Spaceman!

May 19, 2026 — What does "antimatter" actually mean? Can a particle be its own opposite? What would happen to it, and what does this have to do with a missing scientist? I discuss these questions and more in today's Ask a Spaceman! Support the show:...

May 05, 2026 — How can matter ever go faster than light? What happens when it does? Who discovered this, and what is it good for? I discuss these questions and more in today's Ask a Spaceman! Support the show: http://www.patreon.com/pmsutter All episodes:...

Apr 21, 2026 — What did the universe do to make so many defects? What happens when they get trapped? And could they be hiding right in front of our noses? I discuss these questions and more in today's Ask a Spaceman! Support the show: http://www.patreon.com/pmsutter...

Apr 07, 2026 — What makes the interstellar comet 3I/Atlas so weird? Why are we finding so many interstellar visitors recently? How are they made, and where do they come from? I discuss these questions and more in today's Ask a Spaceman! Support the show:...

Mar 03, 2026 — How can anyone agree on the age of the universe? And how can we be so confident if it's all just a bunch of models? What if the universe is extra lumpy, does that change anything? I discuss these questions and more in today's Ask a Spaceman! Support...