Why does the gravitational force seem to dominate the universe as opposed to the electrical force. As far as I know, both gravitational and electrical force falls off with the square of distance and both can act over astronomical distances, and yet it would seem (to my high school mind) that planets, solar systems, galaxies, etc. are all held together predominantly by gravity. Why is it that the electrical force isn't as, for lack of a more scientific term, potent?