Thanks for the reply. But what I was thinking, is that if the speed of light relative to anything is still at the constant of C, then if we suppose the "edge of the universe" (for the sake of example) is expanding away from as at C and light from that edge is traveling to us at C, shouldn't it...
After reading a few threads about the speed of light and the expansion of the universe, I noted one a message which mentioned that even though light may be headed our way it can appear to be going away from us, if the universe were expanding faster than the speed of light.
How does that make...
Thanks for your reply. I still have a problem understanding how a dimension, regardless of how compactified, still counts as an additional degree of freedom just because we can't enter it. Because it is still encompassed within in our 3D reality.
Not sure if you know the other view on...
Going on the basis that if the sun were to instantaneously disappear and the Earth would keep on following the same orbit for 8m20s before shooting off on a tangent, then yes we are orbiting where the sun was 8m20s ago.
According to M-theory as I understand, the 7 additional spatial dimensions to our familiar 3 are curled up all around us but they are too small for us to see. However I have difficulty in understanding how this constitutes a "dimension" because dimensions allow additional degrees of freedom...