What two factors keep earth in orbit and around the sun and the moon in orbit around earth

Social Psychology (10th Edition)
10th Edition
ISBN:9780134641287
Author:Elliot Aronson, Timothy D. Wilson, Robin M. Akert, Samuel R. Sommers
Publisher:Elliot Aronson, Timothy D. Wilson, Robin M. Akert, Samuel R. Sommers
Chapter1: Introducing Social Psychology
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What two factors keep earth in orbit and around the sun and the moon in orbit around earth
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Gravity is the primary force that controls the orbit of the planets around the sun. While each planet has its own gravity based on the size of the planet and the speed at which it travels, orbit is based on the gravity of the sun. The sun's gravity is just strong enough to keep the planets pulled toward it to create an orbit pattern but not strong enough to pull the planets into the sun. This is similar to the effect of the Earth on the orbit of the moon and satellites. The lesser gravity of the planets also helps to keep the planets from falling toward the sun.

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