in reply to Saturn
D'oh, just realised I made a typo on the 4th last line of Saturn's body, using a comma instead of a dot. That is, instead of:
I meant to type:
Oh well, that typo seems to have created an "accidental" visual effect. :-) If you make the one character change described above, you'll notice the "Saturn tilt sequence" runs faster and without flicker. Not sure which one looks better however. Update: fixed the typo in the root node after feedback from ysth.