Is the universe finite? If so is it possible to find the center? Apparently not as it is uniform as far as the eye can see in all directions (giving us the illusion of being at the center). Could we then estimate what percent of the total universe is contained in the visable universe?
Ignoring time for the moment, could we imagine our three-dimensional world as the surface (brane) of a sphere in four dimensional space? i.e. If we could go far enough would we eventually return to where we started? In that case there would be no center, just as there is no center of the surface of a sphere.
What would the implications be of the universe not being finite?
Friday, July 9, 2010
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