Episode Clips

Jupiter, the First Planet to Form in our Solar System

Jupiter formed long before most other planets around it did.

Five Facts About the Biggest Planet in our Solar System

Jupiter is more than the biggest planet in our solar system—it's also the oldest.

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The Planets: Saturn

NASA's Cassini reveals the mysteries of Saturn's rings—and new hope for life on a moon.

The Planets: Ice Worlds

Beyond icy worlds of Uranus and Neptune, Pluto dazzles with its mysterious ocean.

The Planets: Mars

Before it was a dry planet, Mars was a wet world that may have hosted life.

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