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Force of Gravitation
The orbit of a planet is an ellipse with the Sun at the one of the foci.The line joining the planet and the Sun sweeps equal areas in equal intervals of tim..
Kepler's Laws
Johannes Kepler derived three laws, which govern the planetary motion: The orbit of a planet is an ellipse with the Sun at the one of the foci The line joining the planet and the Sun sweeps equal areas in equal intervals of time The cube of the mean distance of a planet..
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