Oh well a radio photon has a low frequency Corresponding to a deep voice like me Foot long wavelength, how can that be? It comes from processes having low energy A radio photon has a low frequency 'Cause it has a pretty low energy It was 1931 when Dr. Karl Jansky He's the father of radio astronomy He studied radio noise to find out what it could be And saw that it was coming from our own Galaxy He wondered what all the static could be It was the center of the Milky Way Galaxy I'm gonna tell you what you want to know I'm gonna tell you what you want to know Those long waves penetrate Earth's atmosphere Even if it's cloudy it's radio clear Observatory dishes placed far and near Let astronomers see how the waves interfere They penetrate through the atmosphere Down to radio dishes placed far and near There's a lot of cool gas in the Milky Way Neutral hydrogen atoms leading the way When the proton and electron spins decay It sends a really long radio wave our way