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Originally Posted by Andreas
Oh sure, I have no problem with understanding the expansion of space.  I was thinking about whether other types of expansion like Sam5's explosion would look the same to the observer (one that isn't in the center).
For a constant speed expansion (initial impulse given at the "explosion") I figure they would... geometrically, in an Euclidian space. I'm not sure how exactly the low speed of light would mess with the observations. Plus there's still the problem that higher speeds would have to be more common than lower speeds to result in the observed homogenous distribution of matter. |
You mean the higher speeds of the galaxies farthest from the earth?
I don’t think that would be a problem if we consider that they are probably not moving “through” fields.
Personally, I think the Lorentz “c” speed limit applies only to matter moving through strong fields, such as here at the surface of the earth. But if the distant galaxies and groups of galaxies are not moving through any other galaxies’ gravity fields, then the “c” limit might not apply at all.
One problem we’ve always had is that we are really little and our telescopes have always been limited in size, so we just can’t see very far into what I think is a very large universe.