Kepler's Theology of the Cosmos

Kepler's idea that magnetism could explain celestial attraction was a further attempt to apply earthly physics to heavenly things. He explicitly said that there is a much closer relation between the heavens and earth than had been admitted by aristotle. According to the copernican system, the earth is in the heavens just as much as any other planet is. In a related move, kepler blurred the strict dividing line the aristotelians drew to separate physics from pure mathematics. Where there is matter, he said, there is geometry, justifying his idea that one can use mathematical analy s to establish nature of physical reality.