# Definitions and Synonyms of *kepler's law of planetary motion* | Another word for *kepler's law of planetary motion* | What is *kepler's law of planetary motion? *

*Definition 1: (astronomy) one of three empirical laws of planetary motion stated by Johannes Kepler - [noun denoting cognition]*

*(**kepler's law of planetary motion* is a kind of ...) a generalization that describes recurring facts or events in nature

*kepler's law of planetary motion*is a kind of ...) a generalization that describes recurring facts or events in nature

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*"the laws of thermodynamics"*### (... is a kind of *kepler's law of planetary motion* ) a law stating that the orbit of each planet is an ellipse with the sun at one focus of the ellipse

### (... is a kind of *kepler's law of planetary motion* ) a law concerning the speed at which planets travel; a line connecting a planet to the sun will sweep out equal areas in equal times

*"Kepler's second law means that a planet's orbital speed changes with its distance from the sun"*