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?
   • Where did the Big Bang happen?  

What happened before the Big Bang?
   • What happened before the Big Bang?  

What really happened at the Big Bang?
   • What really happened at the Big Bang?  

How far is the edge of the universe?
   • How far is the edge of the universe?  

Have astronomers disproved the Big Bang?
   • Have astronomers disproved the Big Bang?  

Cosmic inflation
   • Cosmic Inflation  

The Big Bang Theory
   • The Big Bang Theory  

Fermilab physics 101:
https://www.fnal.gov/pub/science/part...

Fermilab home page:
https://fnal.gov