Kepler's law
noun
Kep·ler's law
| \ ˈkeplə(r)z-\
Definition of Kepler's law
1
: a statement in astronomy: the orbit of each planet is an ellipse that has the sun at one focus
2
: a statement in astronomy: the radius vector from the sun to each planet generates equal orbital areas in equal times
3
: a statement in astronomy: the ratio of the square of the revolution period to the cube of the orbital major axis is the same for all the planets
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