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4/7/2016 3:06:23 AM
1
When you say "flat universe", are you referring to a universe that is literally flat, or one that simply expands in such a manner rather than expanding in a spherical fashion?
English
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Well obviously we perceive a 4 dimensional system, but the universe is flat in the sense that the energy density is constant everywhere we look.
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Ah so 4 dimensional as in the XYZ axis +time being the 4th?
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Yes, exactly.
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Not sure I follow you. I've studied some astronomy but not that far.
