The breakdown of Einstein's equations at light speed.

Einstein's equations of special relativity predict that as objects approach the speed of light, time slows down and space shrinks. However, at the exact speed of light, the equations break down, and it becomes impossible to determine how light experiences time. By using the approach of limits, scientists have been able to examine what happens as objects approach the speed of light. They have found that as objects get closer to the speed of light, time slows down, and space shrinks. From a photon's perspective, it experiences neither time nor space, existing in all places and all times at once.