Clearly odd proportions to print, but that was up to nature.
This is a scale set of the planets in our solar system (including Pluto and our Sun)
They are simply spheres with posts, other than Saturn's ring, to mimic classic Christmas tree ornaments but represent our planets to scale.
(someone please print these all to scale)
I've included an STL and 3dm so that you can choose the best way to print the spheres on your printer