Our whole universe was in a hot dense state...

behind the scenes of the Big Bang Theory

Bill Nye the Science Guy on the set of the Big Bang Theory.

Bill Nye the Science Guy on the set of the Big Bang Theory.

The cast behind the scenes during a tape day.

Bill Prady, Simon Helberg, and Mike Massimino

WHOOP WHOOP!

WHOOP WHOOP!

So Bill just tweeted this. My guess is, its gonna be a good ep.

So Bill just tweeted this. My guess is, its gonna be a good ep.

"Bill Prady, Chuck Lorre and I at Governors Ball. I love my other family" via her twitter

"Bill Prady, Chuck Lorre and I at Governors Ball. I love my other family" via her twitter

Bill Prady’s seat at the Emmy’s, via his twitter

Bill Prady’s seat at the Emmy’s, via his twitter