Just to get some grip on how large the universe is, check these out:
A really awesome scroll of sorts where you can go from the smallest thing to the largest:
The Scale of the Universe 2
Pretty good article about size of universe:
From Quark to Quasar: The Observable Universe
A really awesome scroll of sorts where you can go from the smallest thing to the largest:
The Scale of the Universe 2
Pretty good article about size of universe:
From Quark to Quasar: The Observable Universe