The recent post by shamrock5585 got me thinking. Most models of stellar formation and stuff basically involve an accumulation of mass through gravity building larger and larger mass. However, even if we assume that all the particles are of neutral charge we can still expect a dipole-dipole force as the particles get closer (through taylor series expansion). However, (if we briefly consider gravity as a newtonian force instead of in terms of general relativity) I would be inclined to think that, due to the very small size of the constant G, that the dipolar term (although it is of the order 1/r^3) would be dominant as the particles begin to closely pack and yet I don't think I've ever heard of dipolar attraction being an important factor of stellar formation (although i'm a computational quantum many-body guy not an astro guy). I guess my question is, is dipolar attraction ever considered in these sorts of models?