All the other marbles clump and become stars in the galaxy. And the smallest clumps become the gas giants and tiny Mercurys that orbit those stars. This is why all stars native to a galaxy will rotate along the same orbital plane, and all there planets and dust clouds orbit along that stars orbital plane. read more
The Sun, the planets, all the asteroids, they are all spinning around the galaxy and spinning around themselves. The most likely reason WHY everything spins is that the original planetary nebula was itself spinning, and conserved angular momentum as it contracted. read more