What is the Cosmic Microwave Background?

The Cosmic Microwave Background, or CMB, is the remnant of the primordial fireball of the Big Bang. In this video, Fermilab’s Dr. Don Lincoln explains how it came to be. This is the first of a three part series, with follow on videos describing how what secrets the CMB has told us and what mysteries remain to be solved. Where did the Big Bang happen? https://www.youtube.com/watch?v=A0FZgCiJGrg What happened before the Big Bang? https://www.youtube.com/watch?v=dr6nNvw55C4 What really happened at the Big Bang? https://www.youtube.com/watch?v=bZdvSJyHvUU How far is the edge of the universe? https://www.youtube.com/watch?v=u23vZsJbrjE Have astronomers disproved the Big Bang? https://www.youtube.com/watch?v=aFs5cKiajto Cosmic inflation https://www.youtube.com/watch?v=0uj0HZ3HLFw The Big Bang Theory https://www.youtube.com/watch?v=gZDa6d93ywE Fermilab physics 101: https://www.fnal.gov/pub/science/particle-physics-101/index.html Fermilab home page: https://fnal.gov