One thing I cant comprehend is the question of weather or not the universe has and end? If one were able to travel in a fast space craft, covering a great distance, would one arrive eventually at the physical boundary-the boundary of the universe? If yes, then where the universe ends; what begins? More universe? Something else? And how many light years separate Earth from the perimeter of the universe? If it does indeed exist. And how can we find out? Our most powerful telescopes gaze deep into space, yet they only see a myopic fraction of what is there. If there is an end; we cannot see far enough to see it.As technology and knowledge grow, our understanding of the environment in which we exist becomes more and more understandable. For example, mankind was of the opinion that the world was flat like a table. Now we know better, thanks to improved technology, such as space craft and satellites which can travel far enough away from sea level, to be able to view the world with a better perspective. The Vikings believed if they sailed their long-boats far enough, they would fall off the edge of the earth, in a giant waterfall. They never found that waterfall!Some questions we just can't answer at this stage. Like why did Jessica Simpson cheat on Nick Lachey with that guy from Jackass? Or where does the universe end? However that does not mean we should not ask the questions and ponder the possibilities. Out there in space somewhere lies the answer. Its there right now, we just don't know what it is.And let me ask you this...How small is the universe? How small do things actually come? We know cells are made of atoms which are made of smaller components: protons neutrons and electrons. But what is the next smallest thing? The universe consists of a macro and micro scale. Macro meaning BIG and Micro, SMALL. It is clear that the universe is both so large and so small at the same time, that mankind has not yet found the limits of either extreme.