If Rand Paul were smart, he’d answer the question as Gerald Schroeder (PhD from MIT) answers it: It’s both 15 billion years old AND 6000 years old. “Among other things, Schroeder attempts to reconcile a Biblical view with the scientific model of a world that is billions of years old using the idea that the perceived flow of time for a given event in an expanding universe varies with the observer’s perspective of that event. He attempts to reconcile the two perspectives numerically, calculating the effect of the stretching of space-time, based on Einstein’s theory of general relativity.”