How the Universe Works · SEASON 2
Asteroids - Worlds That Never Were
Episode 7 · 2012-08-22

- Documentary
Episode overview
Asteroids wiped out the dinosaurs and may be back for us but they also built the Earth and may have brought life to its barren surface. Asteroids will shape our future as much as our past and scientists are striving to unlock their secrets.
42 minutes
Season 2 episodes
1. Volcanoes - The Furnaces of Life2012-07-11
2. Megastorms - The Winds of Creation2012-07-18
3. Exoplanets - Planets from Hell2012-07-25
4. Megaflares - Cosmic Firestorms2012-08-01
5. Extreme Orbits - Clockwork and Creation2012-08-08
6. Comets - Frozen Wanderers2012-08-15
7. Asteroids - Worlds That Never Were2012-08-22
8. Birth of the Earth2012-08-29