Hi everyone. I have a very keen interest in physics. Unfortunately at school I was made to do a combined qualification in science which didn't allow me to persue what I was interested in most. I still try and read and understand what I can about physics and cosmology... but one thing has bothered me for a while, maybe you can help answer... As far as I understand it, the mathmatical description of a black hole ends in singularity. In physics circles this is a bad thing as far as I know. We know black holes to exist, and from what we understand their mass is infinite, resulting in infinite gravity. Now, since gravity has unlimited range, why isn't a single black hole swalling up all mass objects from across the universe instantly? Surely infinite gravity + infinite range = no universe? Or is just because we don't understand the mechanics of black holes fully? Thanks!