Answer:
Johannes Kepler discovered the three laws of planetary motion.
Explanation:
Kepler's three laws are as follows:
1. All planets move around the sun in elliptical orbits
2. A radius vector joining any planet to the sun sweeps out equal areas in equal lengths of time
3. The squares of the sidereal periods (of revolution) of the planets are directly proportional to the cubes of their mean distances from the Sun
