For 10 points, name this German mathematician and astronomer whose laws of planetary motion came from inspecting Tycho Brahe's work.
A discredited theory of this man, the first to discuss Olbers' paradox, used nested platonic solids. One principle named for him contains the proportionality constant 4 pi squared over G M, and relates the square of a [*] period to the cube of a semi-major axis. Another law of his describes a line between two bodies that sweeps out equal areas in equal time, and his first law states that the sun is a focus of the elliptical orbit of any planet. For 10 points, name this German mathematician and astronomer whose laws of planetary motion came from inspecting Tycho Brahe's work.
A discredited theory of this man, the first to discuss Olbers' paradox, used nested platonic solids.
Johannes {Kepler} [{AJ/MJ}]