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Flatland
#25
Mar14-10, 04:43 AM
P: 150
Quote Quote by bannerman100 View Post
So where is the universe expanding from ? The concept of expansion requires a centre as a starting point.
In a closed universe space curves back itself. What this means is that if you travel in a straight line in any direction you will eventually end back at your starting point. Now tell me what is the center to that?