Long story short: there's no such thing as a stable orbit... any two objects in orbit will emit gravitational waves.. and slowly get closer and closer together. If the two objects in question are neutron stars, we can even detect the gravitational waves! We hope to "hear" them soon with the LIGO gravitational Wave Observatory!

Today's guest it Robot Hugs, the author of the Robot Hugs comic. The Physicists are Jocelyn Read and David Tsang! WHAT FUN!