X

Join or Sign In

Sign in to customize your TV listings

Continue with Facebook Continue with email

By joining TV Guide, you agree to our Terms of Use and acknowledge the data practices in our Privacy Policy.

Prehistoric Disasters

Asteroids and other cosmic objects fill our solar system, and Earth could be in the path of many of them. This Discovery Channel documentary reveals the planet's precarious position in the cosmos and what scientists are doing to prevent catastrophe.

Loading. Please wait...

Content not available in your region? ExpressVPN can help you stay connected wherever you are. Get 4 extra months FREE with TV Guide's exclusive offer.

Cast & Crew See All

Terry MacDonald
Self - Narrator

Season 1 Episode Guide See All

Episode 1

Birth of the Planet

Sun, Mar 1, 200943 mins

30 million years after the birth of the Earth, a cataclysmic collision with a Mars-sized planet almost destroyed the planet completely. Instead, this chance collision formed the moon, triggering an extraordinary sequence of events that formed this unique planet teaming with life. As the vaporized Earth reels from the impact, the moon forms out of the dust and rock debris that gravitate around it. This world is completely inhospitable to life and yet remarkably, within a few billion years, life takes a hold. And all this is possible because of the moon. Mixing Earth's organic rich oceans with giant tides, slowing Earth's rotation and stabilising Earth's axis, the moon plays a vital role in progression of life.

Where to Watch