Well, if you want to be pedantic, velocity is a rate too, is it not? Distance over time.
Anyway, there are countless articles / studies about this that can explain it far better than anyone on this thread. Suffice it to say, the size of the universe expanded from the planck length to a factor on the order of 10^28 in an extremely short amount of time
Existing radiation would simply be stretched and omnipresent given this massive change. That is why we have the CMB.
drosse1meyer t1_j1e13q0 wrote
Reply to comment by nicuramar in Can we truly know the age of the universe? by Geodad478
Well, if you want to be pedantic, velocity is a rate too, is it not? Distance over time.
Anyway, there are countless articles / studies about this that can explain it far better than anyone on this thread. Suffice it to say, the size of the universe expanded from the planck length to a factor on the order of 10^28 in an extremely short amount of time
Existing radiation would simply be stretched and omnipresent given this massive change. That is why we have the CMB.