Instant Egghead - Comets versus Asteroids

If you answered "one of Santa's reindeer" and "a popular video game from the '80s"--this episode of Instant Egghead is for you. Scientific American editor John Matson explains how our favorite space rocks differ.


You must sign in or register as a member to submit a comment.
Scientific American Back To School

Back to School Sale!

12 Digital Issues + 4 Years of Archive Access just $19.99

Order Now >


Email this Article

This function is currently unavailable