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Jan10-06, 04:29 AM
The term "flat" in describing the universe means that its curvature is 0, not that it is 2 dimensional.
Current models of the universe describe it as being without any boundary, so you second question is can't be addressed.
So in other words our telescopes have not reached to the very ends of the universe where we can see nothinging but "empty" space and no galaxies?