I'm trying to reconcile the age and size of the universe. The size of the universe is more than twice the distance light can travel in the time it has existed. Does this mean that the universe is expanding faster than the speed of light or that it did initially and has slowed down since? I have read that the universe is actually accelerating due to dark energy or some other unknown effect so I guess it isn't slowing down. Does this come down to relativity and the 14.7B years is in a certain frame of reference?