Seriously, though? Whenever I look at the sky, I always wonder: what is on the outside of our cosmic bubble?
The universe expands at a rate of around 1 trillion trillion trillion light-years per second. It would take one heckuva rocket engine to get to its end.
But here's another random thought: compare the universe to a rubber band; when you pull it, it stretches. Like how our universe expands.
...But when you let go, it INSTANTLY snaps shut. My point is, if the universe were expanding, chances are its contraction would be around a 1000 times faster, so we'd never feel it.
Back on track: what is on the outside of our universe? It's like a video game: there's an invisible wall. There is another side. But you cannot reach it. If you try, your character dies.
It's impossible to imagine nothing on the outside of a barrier. What is outside the universe's boundary? What does that boundary look like? It freaks me out just thinking about it; like humanity isn't ever supposed to know the answer. Try it: try thinking of an "outside" to the universe. It will give you a headache.
What's preventing us from imagining the outside of the universe???
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The Universe is basically this, it may be a 5 demension reality, 1st demension, the physical realm, 2nd, the mental realm, 3rd the sprital realm (the abyss), and the 4th, time realm, all of these loop togther, with time ever expanding, the universe expands as well since it is not endless, but it does not go on forever, but it gets bigger... its like a balloon, it gets bigger in that way, we are inside of it thought, so there is no way to get out of it, exept through the abyss. now there could be a 5th demension... anti time, if the 5th demension is real, it would make time travel possible, in a way, you would only be able to go into the future, but you would be stuck... [Edited on 9/25/2005]