I think the design logic you have now takes care of this. When I zoom out all the way, I can only see the label of Pluto, not the actual sphere - and that works

I think the design logic you have now takes care of this. When I zoom out all the way, I can only see the label of Pluto, not the actual sphere - and that works fine. Personally, it was appealing for me to be forced to scroll and zoom around to locate the larger orbits, precisely because it reinforced the actual scale of our solar system versus the inaccurate, compressed idea we get from school. Because, there's always a universal appeal to images like this: http://homepages.wmich.edu/~korista/phys104.html http://homepages.wmich.edu/~korista/phys104.html. Seeing it in 3D, transposed to their orbits would be awesome.