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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
5:12

Space School: Mysterious Objects

Most Watched in The Solar System
3:00

On Jupiter: Jupiter Satellite

Most Watched in The Solar System
2:12

On Jupiter: Jupiter's Own Little Solar System

Most Watched in The Solar System
2:19

Planet Storm: Jupiter Probed

Most Watched in The Solar System
2:32

Planet Storm: Jupiter's Storms

Most Watched in The Solar System
2:11

Planet Storm: Io's Volcanoes

Most Watched in The Solar System
2:31

Planet Storm: Solar Storm

Most Watched in The Solar System
1:50

Ask An Astronomer: Falling Moon

Most Watched in The Solar System
2:39

Planet Storm: Jupiter's Storms

Most Watched in The Solar System
5:30

Space School: The Moon

Most Watched in The Solar System
5:03

Space School: The Sun

Most Watched in The Solar System
3:00

Planet Storm: Ozone Layer


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

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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