Animated graphic symbols presented in a constant time frame are used to diagram and explain the laws of planetary motion devised by the Sixteenth-century astronomer Johannes Kepler. “Little Suite”, ...

Before Johannes Kepler’s Third Law, the motions of the planets around the Sun were a mystery. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

Kepler's laws show the effects of gravity on orbits. They apply to any object that orbits another: planets orbiting the Sun, moons orbiting a planet, spacecraft orbiting Earth.