Imagine a giant asteroid is out in space and headed on a collision course with planet Earth. Your mission, is to annihilate this giant mass of space rock before it can even get close. What do you do? How do you do it? Join Mindy and Guy Raz as they travel through time and space to the asteroid belt for a little experiment of their own! It's the Who, What, When, Where, Why, How, and Wow in the World of Planetary Defense!