Only one force - gravity.
Only one force - gravity.
Gravity.
Kepler's laws of planetary motion do not address the gravitational forces that govern planetary movements, nor do they explain the nature of the forces acting on the planets. Additionally, they do not account for the elliptical orbits being influenced by other celestial bodies, such as the gravitational pull from nearby planets or stars. Instead, Kepler focused on the geometric relationships and patterns of planetary orbits around the sun.
Newton's laws of motion describe how objects move in response to external forces, while planetary motion refers to the motion of planets in space under the influence of gravitational forces. Newton's law of universal gravitation helps explain the motion of planets in their orbits around the sun by describing the gravitational attraction between celestial bodies.
3 laws' of planetary motion
According to Kepler's laws of planetary motion, planetary orbits are in the shape of an ellipse with the Sun at one of the foci.
Keplar figured out the laws of planetary motion using Tycho Brahe's data.
They all obey Kepler's 3 laws of planetary motion.
Gravity is the dominant force that governs motion in the universe on a large scale, such as the motion of planets, stars, and galaxies. It is responsible for keeping celestial bodies in their orbits. On a smaller scale, other forces like electromagnetism and nuclear forces also play a role in governing motion.
The mutual gravitational forces that attract a planet and the sun to each other are responsible for keeping the planet in orbit around the sun.
Johannes Kepler
His laws of planetary motion.