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Originally posted by ShreddedIce
as opposed to the inside of a balloon, where you could reach the edge.
Originally posted by cmdrkeenkid
If the balloon is spherical, then the inside of the balloon would be as well. So where would the edge be?
Space is a continual sphere (but the "surface" is also a complex multi directional wave that folds and bends). You can travel in any direction and if you travel long enough could return to your point of origin. As long as you can travel faster then the rate of expansion of the surface of the balloon.
So if the universe is expanding at the speed of light in every direction you would have to find a way to go faster then the speed of light just to overtake the amount of space the expanding universe is adding between you and your point of origin every second.
Its hard to explain but the entire universe is the same as an atom. And is the connected to every atom, meaning while an atom can appear to be finite in nature it is actually infinite in depth. Just as the universe is infinite in nature can also be finite in depth. Its just understanding that there is a grand unifying link between the two where "man" fails to understand what the universe really is
How can the Universe go on forever though?
Surely it will have an edge with something outside, and is just REALLY big.
Originally posted by Xeven
...Our universe is supposedly expanding... that means the known galaxies, gas dust etc.. are expanding. Then you have space or emptyness or what ever our matter is expanding into.
I actually get breathless when I try to imagine (wrap my limited brain around) endless nothingness. Its a weird sensation that nothing else really causes me to feel...