What is the motion of body that travels around another body in space called?

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gsenviro eNotes educator| Certified Educator

When a body is traveling around another body on space, the motion is called revolution. It is different from another motion of celestial bodies, known as rotation, in which the body spins on its own axis. An example is Earth's motion in space. Earth exhibits both rotation and revolution. Our Earth rotates on its own axis and also revolves around the Sun. Both these motions are very significant for us. Earth completes 1 rotation on its own axis in about 24 hours and this gives rise to days and night. Earth's revolution around the Sun takes about 365 days and it is this motion that results in different seasons on Earth. Other planets of solar system also revolve around the Sun.

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