What Goes Around Comes Around




Walkabout the Galaxy show

Summary: Strange, Charm, and Top explore the ways orbits change and a new research report that says that most of the asteroids in the inner part of the asteroid belt may be the debris of just five primordial protoplanets that got smashed to smithereens billions of years ago. That's why the new name for asteroids is going to be "smithereens". Plus: nerd news and spaceflight history trivia!