Solar system from Mysterium Cosmographicum

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Johannes Kepler's first major astronomical work "Mysterium Cosmographicum" was the first published defense of the Copernican system.
Kepler found that each of the five Platonic solids could be uniquely inscribed and circumscribed by spherical orbs; nesting these solids, each encased in a sphere within one another would produce six layers, corresponding to the six known planets - Mercury, Venus, Earth, Mars, Jupiter and Saturn. By ordering the solids correctly - octahedron, icosahedron, dodecahedron, tetrahedron and cube.
Kepler found that the spheres could be placed at intervals corresponding to the relative sizes of each planet's path assuming of the planets circle the sun.