[Bring_Back_Shantz]

Originally Posted by jammies

If time was "relative" to the insane degree required to have a 6000 year old earth, we would see visible evidence of it. Changing the rate of time would also change the speed of light, so our observations of the universe past 6000 light-years away would be radically different. Since there is no such disjunction in our observations, this never happened.

Nope, that's why the speed of light is C in gold ol' E=MC^2,
C=Constant

Time is realtive depending on your velocity and the effect of gravity in your vicinity, but no matter your frame of reference you'll always measure the speed of light as the same value.