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