Explanation of how objects under the influence of gravity move in orbits /

What force keeps changing Earth's direction of motion? The Sun's gravitational force constantly pulls Earth toward it; however, Earth is traveling forward at a high rate of speed, balancing the gravitational effect and causing the planet to orbit the Sun.

Bibliographic Details
Other Authors:	Leonard, Melinda (Director), Gorlinski, Gini (Narrator)
Format:	Video
Language:	English
Language Notes:	In English.
Published:	Chicago, IL : Encyclopedia Britannica, 2011.
Series:	Academic Video Online
Subjects:	Astronomy. Celestial mechanics. Astrophysics. Gravity. Astronomie. Mécanique céleste. Astrophysique. Gravité. Astronomy Astrophysics Celestial mechanics Gravity documentary film. Documentary films Educational films Short films Educational films. Documentary films. Short films. Films éducatifs. Documentaires. Courts métrages.
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