The cosmic microwave background is the fossil remnant of the fireball of the Big Bang. Aside from demonstrating that the Big Bang happened, it can tell us how big the universe is and how much dark matter and energy the universe contains. In this video, Fermilab’s Dr. Don Lincoln guides you through this interesting topic.

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