>>15040222The speed of light is NOT dependent on its frequency: orange light is just as fast as green light, despite these colors having different frequencies from each other.
The speed of light IS dependent upon the medium it's traveling through, so for light to slow significantly, light needs to pass through a relatively dense collection of matter, and most of the universe is near-vacuum, so in MOST cases, the light we observe will be at the speed of C (or very near to it).
Red shift and blue shift have more to do with the PHASE of the light changing as distance changes, and so the color/frequency changes as a result of the phase changing (like doppler effect). The lower the frequency, the farther it is away.
I would be much more inclined to believe that red-shifts are being misinterpreted as accelerating distance only by something like accumulated interference from hydrogen along the journey of the light rather than from "muh frequency."
