You know what strikes me about asteroid Gault (6478)?
Astronomers believe it might be disintegrating due to the sunlight’s effect on its spin velocity.
Yes, I just wrote that. Photons, which have no mass, still have what is called impulse. They can push, and they do. Gault eventually started to spin too fast to stay together.
I have found no evidence of actual proof of this being the reason for the tails, but it’s absolutely, entirely feasible as an idea.
Just let that sink in. #awesomephysics