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New Theories / Re: How does light propagate? By what means does light get from Point A To Point B?
« on: Yesterday at 17:56:57 »Perhaps it's because the speed of light is defined to be a constant, and spacetime is defined so that its expansion doesn't change the speed of light.
Not so. If the speed of light had changed over the course of the Universe's history, we would be able to see differences in the behavior of distant galaxies and stars compared to closer galaxies and stars.