I'm still failing to grasp how, say for example humans who developed the technology to travel at 99.9% light speed, could travel for 5 light years, say from another planet to ours in that distance, and for us it would appear as though their journey took 5 years, for them only a moment or two? Can light never age? For example, light emitted from the oldest observed stars?
He who loves God cannot endeavour that God should love him in return - Baruch Spinoza