I happened to be reading The Emperor's new Mind by Roger Penrose.
Penrose talks about the big bang being considered the start of the universe (Chapter: Cosmology and the Arrow of Time). He says that the Big Bang and the subsequent expansion of the "universe" created the space that we call the universe(This he represents pictorially as an expanding balloon). And it is an accepted fact that the universe is expanding continuously.
So my question is "If i were on the edge of this expanding universe, then on one side is the universe as we know it. What is on the other side?"