[Ruatha]

Originally posted by Suicide Junkie:
Because it is very unlikely that all the particles comprising the planet had velocities that would cancel each other out to zero when they came together.

But to have such a fast spin as most planets have most particles would hav eto have the same general direction, or? (Why do stars spin in the galaxy? I know what keeps them from flying away but why do they spin?)

(It doesn't seem to be any answer, most belive it's from the big bang but it seems there are no good theory as to why things spins (planets arund their axis, all stars in the same direction around the galaxy, etc))