Grade Levels: 4th Grade, 5th Grade, 6th Grade, 7th Grade, 8th Grade, 9th Grade, 10th Grade, 11th Grade, 12th Grade,
Synopsis: Over one million asteroids have been discovered in our solar system! But do we need to worry about them? And how do we find them? NASA asteroid expert Davide Farnocchia and Bob Holmes tell us all about asteroids, and how we track and analyze them.
Running Time: 3:57 minutes