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Astronomy and Cosmology
Cosmology
No way to catch up with galaxies currently receding at >c?
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[QUOTE="Comradez, post: 6551938, member: 481099"] So special relativity says that relative distances [B]locally [/B]can't be changing at a rate greater than c? Does this mean that, in a fundamental sense, recessional vs. approaching velocities have nothing to do with it? Does this leave open the possibility, if there were just the right spacetime geometry somewhere, or if there were scale-factor contraction in the universe in general (which is, of course, not the universe we appear to inhabit), then far away objects could in effect be approaching us at a rate greater than c (as long as they were "locally" not reaching c)? Even with the scale-factor expansion of the universe that we observe in our universe, are there any areas of particularly warped spacetime geometry that would allow far-away objects to be locally traveling less than c but "globally" traveling greater than c towards some other object? [/QUOTE]
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Astronomy and Cosmology
Cosmology
No way to catch up with galaxies currently receding at >c?
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