The Universe’s SECRET Weapons and How they Affect Earth! | How the Universe Works | Science Channel

From asteroids to supernovas, discover all of the Universe’s secret weapons. Are these incredible events a danger to Earth? Watch and find out!

Universes Deadliest – 00:00 – 08:42
Stars that Kill – 08:42 – 19:52
When Supernovas Strike – 19:52 – 28:42
Death of the Last Stars – 28:42 – 37:23
Asteroid Apocalypse – 37:23 – 46:12
The Next Supernova – 46:12 – 52:46