Join us as we investigate the hundreds of meteorites that have crashed to earth throughout history and the team of dedicated scientists working feverishly to protect us in the future. See how these men and women, using high-tech equipment, plan to fend off Apophis, a 250-ton behemoth heading directly for us.
Asteroid Trackers: Sneak Peek
A giant asteroid is hurtling toward Earth! Do you think this claim sounds like a piece of science fiction? The chance might be one in a billion but that's enough to keep some scientists looking to the skies and planning for the worst.