1 Season
S1 E1 1/8/09

Earth

Meteors have left deep scars all over the face of Earth and are responsible for one of the biggest extinctions in history. Scientists believe that it's not a question of if they'll strike again, but when. This exploration of meteor clashes with Earth includes how scientists are preparing for the next deadly assault on this planet.

Seasons

Episode   1

Earth

Episode   2

Solar System

Episode   3

Galaxies