Who was the German astronomer and mathematician developed 3 laws?

The German astronomer and mathematician who developed the three laws of planetary motion is Johannes Kepler. His laws describe the orbits of planets around the Sun, detailing their elliptical paths, the relationship between a planet's orbital period and its distance from the Sun, and the area swept out by a planet in a given time. These contributions were pivotal in advancing the understanding of celestial mechanics and laid the groundwork for Newton's theory of gravitation.