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Episode Clips

How Did the Moon Come to Be?

Scientists have several theories for how Earth's Moon formed.

Scientists Launch Rocket into the Moon to Find Water

Researchers hope to observe lunar material ejected from an impact.

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The Planets: Mars

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

The Planets: Inner Worlds

The rocky planets have similar origins, but only 1 supports life. Was it always this way?

The Planets: Jupiter

Jupiter's massive gravitational force has made it a wrecking ball and a protector of Earth

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