[00:02] theory in astronomy the idea was if you imagine a sphere inscribed in an octahedron and then you fit the smallest possible sphere around that and then fit the smallest possible icosahedron around that then layer on another sphere and
[00:14] then a do decahedron one more sphere then a tetrahedron one more sphere a cube and then one final sphere you get these six spheres and the ratios between the sizes of those spheres Kepler believed would match the ratios of the
[00:29] the Orbits for the six known planets since these are the platonic solids it somehow feels like a very natural or Universal set of ratios eventually he orbital data to try to confirm his theory and the way he did it was
[00:42] completely heroic by the way but that's beside the point and he couldn't get the theory to fit it was always off by a few percent but even though he started with a wrong premise this is what led him to be the first person to understand how
[00:54] planets actually move around the Sun and to develop his famous aonomus to develop his famous aonomus laws and