>>Animation of pictures of Jupiter taken by Voyager 1:
>>
>>http://en.wikipedia.org/wiki/File:790106-0203_Voyager_58M_to_31M_reduced.gif
>
>Plan for any other lifetime: understand why some belts rotate this way while the others rotate opposite to them.

I believe it's because of the coriolis effect. It is the reason why toilet vortices and hurricanes swirl one way in the northern hemisphere and in the opposite in the southern hemisphere,

http://en.wikipedia.org/wiki/Coriolis_effect