Hi, All

I have some assumptions about clouds surrounding, and produced by, a star - burning through fuel, say

1) the cloud would spin with the star (same spin axis), with the velocity of the surface of the star surface (equator)
2) cloud particles obtain this velocity by being projected from the surface
3) the spin of the cloud is now inertial - as opposed to being continually spun up - by friction, say
4) if the cloud expands, momentum is conserved - I1w1 = I2w2

Does this sound right?

Thanks, Mark