Newton’s law of universal gravitation provides a mathematical basis for gravitational force and Kepler’s laws of planetary motion Einstein’s theory of general relativity shows that gravitational fields change the path of light and warp space and time

An object’s mass is constant, but its weight changes when acceleration due to gravity, g , changes

Einstein’s theory of general relativity — the theory that gravitational force results from the bending of spacetime by an object’s mass. Kepler’s laws of planetary motion — three laws derived by Johannes Kepler that describe the properties of all orbiting satellites. object’s mass — constant, but its weight changes when acceleration due to gravity, g , changes. Copernican model — the model of the solar system where the sun is at the center of the solar system and all the planets orbit around it; this is also called the heliocentric model.