Anyone know of a good solar system mobile?

[Queasy]

We are decorating the kids' room in the new house and we are doing a space theme for my son. We found this solar system mobile at the Discovery Channel Store. It is really neat looking but the room my son is in has a cathedral ceiling with a ceiling fan hanging about 10ft down. So, it's not really doable in there.

I'm Googling and doing other searches now but keep running across this one and another one that looks kind of cheap. Anyone seen any others that would make a good addition to a soon to be 4-year old space cadet?