This video, "A History of the Universe in Sound" by Honer Harger explains how we can use sound to increase our understanding of the universe. First of all, one has to understand that space has sound. It is not silent. The sun, Jupiter, and the rings of Saturn all make sounds. The study of astronomical sounds is called radio astronomy. Scientists use sensitive antennas and receivers to capture the sound. One can discover many things about space (scale/size, age, what it's made of) from listening to its sounds. The oldest noise ever heard was picked up in 1965 at Bell Lab. This cosmic radiation is evidence that the Big Bang existed.