# Kepler's laws

- /ˈkɛpləz lɔz/ (
*say*'kepluhz lawz)*plural noun*three laws of planetary motion stating:**1.**that the planets move in elliptical orbits about the sun, which is situated at one focus of the ellipses.**2.**that the radius vectors joining each planet to the sun describe equal areas in equal times.**3.**that the ratio of the square of the planet's year to the cube of the planet's mean distance from the sun is the same for each planet.

{from Johann**Kepler**}

*Australian English dictionary.
2014.*

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**Kepler’s laws**— of planetary motion, named after their discoverer Johannes Kepler (1571–1630), state: Time to travel from A to X = C to Y Time to travel (E Q E)2 = (EO)3 i. The path of a planet around the sun is an ellipse, and the sun is at one of the foci of… … Aviation dictionary**Kepler's laws**— Law Law (l[add]), n. [OE. lawe, laghe, AS. lagu, from the root of E. lie: akin to OS. lag, Icel. l[ o]g, Sw. lag, Dan. lov; cf. L. lex, E. legal. A law is that which is laid, set, or fixed; like statute, fr. L. statuere to make to stand. See… … The Collaborative International Dictionary of English**Kepler's laws**— Astron. 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); the square of the period of… … Universalium**Kepler's laws**— noun the three laws of planetary motion discovered by Kepler in the early 17th century See Also: Keplers equation … Wiktionary**KEPLER'S LAWS**— See KEPLER, JOHN … The Nuttall Encyclopaedia**Kepler's laws**— n.pl. three theorems describing orbital motion. Derivatives: Keplerian adj. Etymology: J. Kepler Ger. astronomer d. 1630 … Useful english dictionary**Kepler's laws of planetary motion**— In astronomy, Kepler s Laws of Planetary Motion are three mathematical laws that describe the motion of planets in the Solar System. German mathematician and astronomer Johannes Kepler (1571–1630) discovered them.Kepler studied the observations… … Wikipedia**Kepler's laws of planetary motion**— ▪ astronomy in astronomy and classical physics, laws describing the motions of the planets in the solar system. They were derived by the German astronomer Johannes Kepler, whose analysis of the observations of the 16th century Danish… … Universalium**laws of planetary motion**— kepler s laws … Useful english dictionary**Kepler (disambiguation)**— Kepler may refer to: *Johannes Kepler, a key figure in the scientific revolution. Named after him are:Ideas: *Kepler s laws of planetary motion, a set of calculations for the orbits of planets *The Kepler Poinsot polyhedra, a set of geometrical… … Wikipedia