I'm wondering if time and light(entire spectrum) can only coexist simotanuously. When we look out into the cosmos and see stars they can be many light years away. Because it takes time for light to travel. That may have not been relevant. But what I'm saying is... Time is manipulated by the curvature of space time, and the faster you travel to the speed of light your time is manipulated. So does time and light have a relation? Are they completed coherent of each other, needing one another to co-exist?