I was going through wikipedia and other online 'resource' sites trying to to find an answer to this question, and the answers I came across were difficult for me to interpret. Obviously in general terms the Neutron has a charge of 0 but I remember once reading a few years ago that it might have...
Why does gravity exist?
Excellent question! Unfortuneatly no one knows.
As of late, I've come the the conclusion that maybe gravity exist not because it's a force all its own, but because it's the left-over residual effect of another force--the electro-mangetic one. I'm of the opinion...