ExploraTour - Looking at the World in a Different Light
Light that reaches our Earth is called radiant energy. It comes from the sun and other objects in the galaxy and the universe. Exploding stars and very hot objects give off a lot of light that our eyes cannot see.
Our own Sun and the stars that we see in the night sky give off a lot of light we can see. Radio and microwaves come from very cold objects. Click on the image to see what types of light each of these objects emits.