But the speed of light is a finite number...hence light years, the distance in which light can travel in a year. I may not be the sharpest tool in the shed but I know my astronomy.
299 792 458 m / s is how fast that speed can travel. light can go slower than that thru water, prisms, and light can acually be frozen however it cannot go fater than that. 299 792 458 m / s