When a planet or moon spins on its axis one time.

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Rotation causes day and night.

​Rotation

An axis as the imaginary line that passes through the center of a planet from pole to pole.

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​Earth's axis is tilted approximately 23.5⁰

​What is an axis?

When a planet or moon travels once around an object. Planets revolve around the sun. Moons revolve around planets.

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Earth rotates and revolves at the same time.

​Revolution

Mercury = 59 days rotation .24 years revolution

Venus = 243 days rotation .62 years revolution

Earth = 1 day rotation 1 year revolution

Mars - 1.03 days rotation 1.9 years revolution

Jupiter = .41 days rotation 12 years revolution

Saturn = .43 days rotation 29 years revolution

Uranus = .72 days rotation 84 year revolution

Neptune = .67 days rotation 165 year revolution

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​Not all planets rotate and revolve at the same rate.