it's every where in the universe. white light contains all the colors of the spectrum. light can be bent by magnetism or gravity. it can not escape a black hole. light can be amplified and focused (lasers). light causes photosynthesis in plants. light can cause cancers, and be deadly. light keeps us warm. light helps create vitamin "d" in our bodies. when you see an object, you see the reflected colors of that object (all of the other colors are absorbed by that object). light is the speed limit of the universe. light travels at 186k miles per second in a near vacuum. light in a laboratory can be slowed down to less than one inch per second. light can be reflected. light is an electromagnetic wave. it's every where in the universe.