Do You Ever Wonder?

I've always been a pretty curious person and I have always asked questions which usually can not be answered. One thing I have always wandered was "how far does outer space go?". I mean think about it... Does anybody actually know how far forever is? It has to end somewhere right? But if it does, what's at the end? Maybe it doesn't end... but then how far does it go? I guess that's just one question that may never be answered. If you have the answers though, let me know.