I remember when I was young we were taught that the universe was infinite, but now we know that’s not true – it has edges, boundaries, and those boundaries are the moment of creation.  It seems that our physical dimension was created at the moment of the big bang (quite possibly at the moment that the ego split off, and created this physical dimension, when we left the garden of Eden).  Astronomers can, in essence, ‘see’, the explosion that started our universe.  Amazingly, when we look out into space in any direction from our planet we see the beginning of time, the explosion of the big bang moving away from us as the universe expands.   If we are this three dimensional physical universe what’s beyond its’ boundaries?