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      the force by which a planet or other body draws objects toward its center

The force of gravity keeps all of the planets in orbit around the sun.

It would be fun to play basketball on the moon where there is less gravity than on Earth.


Related Links:
Gravity in Space
What Is Gravity Really?
Starchild: What Is Gravity?


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An astronaut smiles as two grapefruit float in front of him
Astronaut Michael Foale finds juggling fruit is easy without Earth's gravity pulling it down.
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Page Last Updated: October 9th, 2014
Page Editor: Sandra May