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Kepler's law

noun

, Astronomy.
  1. any one of three laws governing planetary motion: each planet revolves in an ellipse, with the sun at one focus; the line connecting a planet to the sun sweeps out equal areas in equal periods of time law of areas; or the square of the period of revolution of each planet is proportional to the cube of the semimajor axis of the planet's orbit harmonic law.


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Word History and Origins

Origin of Kepler's law1

After J. Kepler

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