How the Universe Works: A Unique Beginning

Our moon was created accidentally when another planet collided with Earth.


Most Watched in The Solar System

Most Watched in The Solar System
1:54

The Planets: The Sun and Solar Wind

Most Watched in The Solar System
6:36

Space School: Saturn

Most Watched in The Solar System
4:40

Space School: Mercury

Most Watched in The Solar System
4:29

Space School: Pluto

Most Watched in The Solar System
2:47

On Jupiter: Jupiter's Four Largest Moons

Most Watched in The Solar System
5:03

Space School: The Sun

Most Watched in The Solar System
2:04

Understanding: Comet Shoemaker Levy Hits Jupiter

Most Watched in The Solar System
2:31

Planet Storm: Solar Storm

Most Watched in The Solar System
5:39

Space School: The Milky Way

Most Watched in The Solar System
3:00

On Jupiter: Jupiter Satellite

Most Watched in The Solar System
2:59

Fireballs From Space: The Asteroid Belt

Most Watched in The Solar System
2:42

On Jupiter: Comet Shoemaker Levy 9


Recent Videos in The Solar System

Recent Videos in The Solar System
1:59

How the Universe Works: Bound to Collide

Recent Videos in The Solar System
1:38

How the Universe Works: Solar Systems Abound

Recent Videos in The Solar System
2:02

How the Universe Works: The Power of Dust

Recent Videos in The Solar System
2:11

How the Universe Works: Saturn's Rings

Recent Videos in The Solar System
1:35

How the Universe Works: A Study of Two Moons

Recent Videos in The Solar System
1:35

How the Universe Works: A Unique Beginning

Recent Videos in The Solar System
1:46

How the Universe Works: Little Moons

Recent Videos in The Solar System
1:18

Space: Hubble Captures Saturn's Aurorae

Recent Videos in The Solar System
2:23

Stephen Hawking's Universe: Europa's Living Sea

Recent Videos in The Solar System
1:27

Stephen Hawking's Universe: Gas Giant Life

Recent Videos in The Solar System
2:20

Stephen Hawking's Universe: Planets

Recent Videos in The Solar System
1:27

Stephen Hawking's Universe: Primordial Soup