QUOTE(StarMountainKid @ May 2 2007, 10:41 AM) [snapback]1655907[/snapback]
According to current scientific theory there is no 'outside' of our universe because space IS the universe.
Yes, that's according to current scientific theory, but it's only a theory. I disagree with that theory because the universe exists as far as we can detect it. So we cannot rule out that there is something beyond what we call the universe, and although what may exist beyond the universe is space, it may not be part of our universe. As an example, if we are living inside a balloon, and we are so small that we cannot detect the barrier that surrounds our expanding universe(i.e. the air and everything inside the balloon including ourselves, then we would say that since our universe was expanding inside that balloon, it would appear to be "all that is", although outside the balloon would be outside our universe as we know it inside the balloon. But I believe there's a possibility that at the fringe our our universe lies a barrier and perhaps beyond that barrier lies another universe, and beyond that other universe lies another universe, and so on.
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The gravity of all the matter in the universe determines its shape. If you traveled in some direction long enough, you'd end up where you started. You would never come to an edge or border of our universe...there is none. It's like the surface of Earth, you can travel around and around as much as you want and never come to a edge.
The word "edge" is defined as
1. the boundary of a surface
2. a sharp side formed by the intersection of two surfaces of an object; "he rounded the edges of the box"
3. ** boundary: a line determining the limits of an area
So this is true that gravity determines its shape; however, that still does not rule out that there is no edge, fringe, barrier of the universe. It may exist, we just haven't found it yet. If you draw a circle, and take a pencil and lead the pencil around the inside of the circle, obviously, you will not find the edge of the circle unless you can detect it by some means and/or go in the right direction to lead you to the edge. I'm so glad someone discovered there's and edge to our atmosphere, and that there definitely is something beyond the earth.
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A question I'm interested in is why is there Existance at all?
I believe survival and adaptation is the reason for existence. We have to keep reminding ourselves that we are not sitting on the throne of creation.