PS… the guys at Bell Lab that couldn’t tune out the back ground noise proclaimed to be noise left over from the ‘Big Bang’ was a wild guess that has never been proven.
I spent many years as a micro wave tech for the military and various other agencies including the FAA. One of my specialties with the FAA was finding interference noise. I was tasked with doing the same thing for the military. (Jingle jingle) that is me rattling my medal awarded for finding a noise issue no one else in the military could. The Bell Lab guys were wrong. The earth is inside a gigantic noise generator. The test to prove this background noise is external to our solar system can not and has not been done. So, claiming that noise is evidence of a Big Bang is a Big Guess.