Astronomers and the like say that the Background Microwave Radiation, that is present no matter where a Radio Telescope is pointed, is the residue of the light from the "Big Bang" that created our Universe. I'm pretty sure they say that over time (10 - 20 billion of our years) the frequency of the light, from the "Big Bang", has slowed down to the frequencies in the MicroWave band.
Ok......That i…