Laws Of Planetary Motion
Laws of planetary motion refer to the set of three fundamental principles proposed by Johannes Kepler in the early 17th century to describe the motion of planets around the Sun. These laws are: 1. The Law of Ellipses: Each planet moves in an elliptical orbit, with the Sun at one of the two foci of the ellipse. 2. The Law of Equal Areas: A line segment joining a planet and the Sun sweeps out equal areas during equal intervals of time. 3. The Law of Harmonies: The square of the orbital period of a planet is directly proportional to the cube of the semi-major axis of its orbit.