Hello, We know we can not see light.It is only the effect of light that we actually see . Is it because of the fact that our eyes cant move at a speed of light? or its just basically the nature of light that we can never see it..? If I move my eyeballs at 'c', would I be able to see light? Remember: We theoretically assume that movement of eye-balls at the speed of light is possible. The discussion is not about achieving speed of light.,etc.