• Exhibition Text

    • The Moon orbits Earth. Earth orbits the Sun. The Sun orbits the center of the Milky Way Galaxy. Gravity governs all of these motions, holding moons, planets, and stars in their orbits. If gravity ceased, the solar system and our galaxy would fly apart.

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  • For Educators

    • Topic: Astronomy

      Subtopic: Universe

      Keywords: Astrophysics, Gravity, Orbits

      Audience: General

In This Section



Ice-skaters spin faster when they pull their limbs in tight. The same principle applies to the collapsing cloud that formed the solar system.