Encke's comet is pretty old and worn out. I doubt that any CMEs that've happened in recorded history would have been even a thousandth the energy required to cause enough outgassing to overcome self gravity. ... Now bear in mind that I haven't done the least bit of calculating here, but the energy conveyed per square meter by a CME, once you get out to Encke's orbit is very tiny, and even if you assume all of that energy gets converted to thermal energy, it won't get very far beyond the surface.
Originally Posted by gdaniels99
Forming opinions as we speak