Gamma Was on the Right Track

In 1964 scientists working on satellite communications at the Bell laboratory in New Jersey accidentally came across his remnant heat bathing the universe. It showed up as annoying as an annoying hissing their receiver, all attempts to explain it away as a defect in the equipment, including pigeon droppings in the entire field. They spent days trying to clean their big antenna of pigeon droppings because they thought that that was where the interference was coming from. No, they detected the heat left over from the Big Bang. And the only explanation left was that disturbance came from outer space. This was the big bad smoking gun.