It is therefore a prediction of the Big Bang picture of the universe that there should be radiation coming at me from all directions from that “last scattering surface.” Since the universe has expanded by a factor of about 1,000 since that time, the radiation has cooled on its way to us and is now approximately 3 degrees above absolute zero. And that is precisely the signal that the two hapless scientists found in New Jersey in 1965, and for whose discovery they were later awarded the Nobel Prize.
