Johannes Kepler was a German astronomer, mathematician, and astrologer who lived from 1571 to 1630. He is best known for his three laws of planetary motion, which revolutionized our understanding of the solar system. Kepler was born in Weil der Stadt, Germany, and studied at the University of Tübingen before becoming an assistant to the astronomer Tycho Brahe in Prague. After Brahe’s death, Kepler became the imperial mathematician to Emperor Rudolf II and spent much of his career in Prague. In addition to his work on planetary motion, Kepler also made significant contributions to the fields of optics, geometry, and calculus. He wrote several influential books, including the Astronomia nova and the Harmonices Mundi, and his ideas laid the foundations for the scientific revolution of the 17th century. Kepler died in Regensburg, Germany, in 1630 at the age of 58.