A rocky or metallic object that orbits the sun and is much smaller than a planet. A belt of these can be found between Mars and Jupiter.

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A system of planets and other bodies that orbits a star.

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A natural object that orbits a planet; a natural satellite.

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A system that contains many stars, star systems, and objects orbiting stars. Ours is spiral shaped and called The Milky Way.

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Gas giants are far from the Sun and very far from each other. They have many moons and rings.

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The motion of one object around another object; orbit. On Earth, this causes a year or 365 days.

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An object made of mostly frozen gases that melt into a “tail” as it gets closer to the sun.

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Half of Earth; Northern/Southern or Eastern/Western.

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The turning of an object on its axis. On Earth, this causes a day or 24 hours.

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A large body in space that orbits a star and does not produce its own light.

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Terrestrial planets that are rocky and surrounded by an atmosphere.

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