Quote (YaC @ May 15 2012 11:03am)
Ahhhh, okay finally I understand why the universe could be expanding forever, because of the repulsive force of dark matter.
Always thought it had to get back together over the long run due to the never ending force of gravity.
Correct me if I'm wrong, but Dark Matter would have a gravitational force since it is in fact matter. Dark Energy is the repulsive force.
I've heard of a theory where the expansion of the universe would slow down due to the gravitational effect of dark matter, come to a stop, and then begin collapsing back down.
And remember guys and gals...ALL of these are just theories.