De revolutionibus orbium coelestium Earth's axis rigidly to a Sun-centered sphere. The unfortunate consequence was that the terrestrial rotation axis then maintained the same inclination with respect to the Sun as the sphere turned, eliminating the seasons." To explain the seasons, he had to propose a third motion, "an annual contrary conical sweep of the terrestrial axis". It was not until the Great Comet of 1577, which moved as if there were no spheres to crash through, that the idea was challenged. In 1609, Kepler fixed Copernicus' theory by stating that the planets orbit the sun not in circles, but ellipses. Only after Kepler's
The Earth Sings Mi Fa Mi press release via Absolutepunk.net: "The title, "The Earth Sings Mi Fa Mi" was taken from a book written by a late 16th century astronomical theorist by the name of Johannes Kepler ["Harmonices Mundi"] and the publication just fascinated the band. Kepler’s theory suggested that each of the 9 planets in our solar system produced tones as they orbited the sun. Throughout the orbit, Venus would stay a consistent note that was considered the 6th in relation to the rest of the planets. As Earth would shift its tonality, it would create the effect of the notes moving from the major