RE: How is the Universe Expanding?
June 17, 2017 at 11:25 pm
(This post was last modified: June 17, 2017 at 11:32 pm by Anomalocaris.)
(June 17, 2017 at 9:20 pm)Ben Davis Wrote: Everything that Alex said but he didn't touch on some of the implications. The expansive force is increasing space at a rate equivalent to a speed greater than the speed of light. That means we're living in a curious time when we're lucky enough to still be able to detect other galaxies. There will come a time when conglomerations of matter will be so far apart, an observer in one would see no others. Cosmology would be all but impossible. This will happen long before the heat death of the universe, too.
If I am not mistaken, what you describe is not an implication of merely space expanding. It is an implication of the suggestion that the rate of expansion is increasing without bound. We actually have no theoretical basis for that extrapolation, because we have no theory for the mechanism responsible for the acceleration.
