Live demo in <a href="https://pedrosbmartins.github.io/downtoearth" rel="nofollow noreferrer">https://pedrosbmartins.github.io/downtoearth</a> (linked in the readme, but it was difficult to notice.)<p>There is a Solar System in model in Stockolm <a href="https://en.wikipedia.org/wiki/Sweden_Solar_System" rel="nofollow noreferrer">https://en.wikipedia.org/wiki/Sweden_Solar_System</a> , perhaps you can add a button to use the same center and scale.<p>It would be nice to add the dwarf planets like Pluto. Everyone knows Pluto and Ceres, but the other ones need some exposition.