Johannes Kepler was a German mathematician, astronomer, and astrologer. created the three laws of planetary motion that we still use to this day. The first two laws were created in 1609, and the third law was created in 1619.
Law 1: All orbits are ellipses
Law 2: The closer to perihelion, the faster you will spin, and the closer to the aphelion, the slower you would spin.
Law 3: The ratio of the squares of the time it takes to orbit once is equal to the ration of the cubes to the semi major axis.