Kepler's laws
Kepler's laws noun: the three laws of planetary motion discovered by Kepler in the early 17th century, stating that (i) the orbit of a planet is an ellipse with the Sun at one of the two foci, (ii) a line segment joining a planet and the Sun sweeps out equal areas during equal intervals of time, and (iii) the square of the orbital period of a planet is proportional to the cube of the semi-major axis of its orbit.
Noun
Kepler's laws pl (normally plural, singular Kepler's law)
- The three laws of planetary motion discovered by Kepler in the early 17th century, stating that (i) the orbit of a planet is an ellipse with the Sun at one of the two foci, (ii) a line segment joining a planet and the Sun sweeps out equal areas during equal intervals of time, and (iii) the square of the orbital period of a planet is proportional to the cube of the semi-major axis of its orbit.
Forms of Kepler's laws
| singular | Kepler's law |
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Origin of Kepler's laws
For Johannes Kepler, German mathematician and astronomer.
Questions about Kepler's laws
- What does Kepler's laws mean?
- Kepler's laws means the three laws of planetary motion discovered by Kepler in the early 17th century, stating that (i) the orbit of a planet is an ellipse with the Sun at one of the two foci, (ii) a line segment joining a planet and the Sun sweeps out equal areas during equal intervals of time, and (iii) the square of the orbital period of a planet is proportional to the cube of the semi-major axis of its orbit.
- What part of speech is Kepler's laws?
- Kepler's laws is a noun.
Words near Kepler's laws in the dictionary
Source and license
Adapted from Wiktionary: Kepler's laws (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.
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