Comment on New model of the universe fits data better than Big BangComments−ck215ySo if the speed of light was slowing down, since everything else seems to obey the same unknown rule, would we even know it? It would be impossible to measure the change right?−ars15yYou can't change the speed of light by itself.The speed of light also controls the mass-energy conversion. So if you slow down light, then mass now has less energy.Less energy means less gravity, and an entire cascade of related effects.
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So if the speed of light was slowing down, since everything else seems to obey the same unknown rule, would we even know it? It would be impossible to measure the change right?
You can't change the speed of light by itself.
The speed of light also controls the mass-energy conversion. So if you slow down light, then mass now has less energy.
Less energy means less gravity, and an entire cascade of related effects.