Plait is an idiot, W*gs, and so are you.
My above post shows that cometary nuclei are negatively charged. You should be asking why? Answer this question and you would understand why cometary tails are not moving away from the nucleus but toward it. This is the key insight -- and is counter intuitive -- but I believe correct.
And if the nucleus is massive enough -- the comet will hold that material (dust and positive ions that are much heavier than hydrogen.).
But instead of asking the key question -- you do the only thing you know how to do -- launch a personal attack.
Last edited by mhgaffney; 04-11-2013 at 02:35 PM..