| kepler's law | | |
| n. | 1. kepler's law, kepler's law of planetary motion | (astronomy) one of three empirical laws of planetary motion stated by Johannes Kepler. |
| ~ law of nature, law | a generalization that describes recurring facts or events in nature.; "the laws of thermodynamics" |
| ~ kepler's first law | a law stating that the orbit of each planet is an ellipse with the sun at one focus of the ellipse. |
| ~ kepler's second law, law of areas, law of equal areas | 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" |
| ~ harmonic law, kepler's third law | a law stating that the ratio of the square of the revolutionary period (in years) to the cube of the orbital axis (in astronomical units) is the same for all planets. |
| ~ astronomy, uranology | the branch of physics that studies celestial bodies and the universe as a whole. |
Recent comments
1 day 20 hours ago
1 day 20 hours ago
1 week 1 day ago
1 week 1 day ago
1 week 1 day ago
1 week 1 day ago
1 week 1 day ago
1 week 1 day ago
1 week 1 day ago
2 weeks 4 days ago