Johannes Kepler: Everything you need to know

The basis for everything we understand about the orbits of the planets comes from the work of German astronomer Johannes Kepler

Kepler, without knowing about the force of gravity, mathematically described the motions of the planets around the sun in his three laws of planetary motion. His work was key in providing evidence for Nicolaus Copernicus‘ theory that the sun, not Earth, was at the center of the solar system.