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Originally posted by 4N6310
If you travel to the edge of a binary space partition in a virtual world, you fall off the map, but that is because there is gravity being defined beyond the edge of the binary space partition.
The expansion of the Universe is a "growth" of the spacetime itself; this spacetime may move faster than the speed of light relative to some other location, as long as the two locations can't communicate with each other (or, in terms of light rays, these two parts of the Universe can't see each other).
Originally posted by Sanders
According to almost all scientific data available, the universe is extremely large, but still finite. Many theories state that in a finite universe such as ours, it is a 4 dimensional version of a 3 dimensional balloon.