The science of Astronomy goes far beyond what humans can see with our eyes.  The visible part of the spectrum has taught us so much, but when we look at all photons across the spectrum of light, we find exponentially more powerful methods for discovering the mysteries of the universe.  Radio waves, yes the same ones that bring you music in your car, are found throughout the universe in very interesting environments. Radio waves often trace the most powerful objects in the universe, such as super-massive black holes, quasars, and other types of active galactic nuclei.  Humans see visible light...