Prodromus Dissertationum Mathematicarum Continens Mysterium Cosmographicum

The Prodromus Dissertationum Mathematicarum Continens Mysterium Cosmographicum, published in 1596, was Johannes Kepler's first major work. In it, Kepler, an astronomer, explored his early ideas about the structure of the universe. He attempted to explain the number and arrangement of the planets by applying the geometry of Platonic solids and musical harmonies. Kepler believed that God had used these five regular polyhedra as spacers between the planetary orbits to create the solar system's architecture. This work, though based on a cosmological model that would later be superseded, was instrumental in bringing Kepler to the attention of other astronomers, including Tycho Brahe.1234