♪ Our whole UNIVERSE
was in a hot, dense state ♪
The Big Bang Theory Season 5, Episode 12
♪ Our whole UNIVERSE
was in a hot, dense state ♪
The Big Bang Theory Season 5, Episode 3
In another UNIVERSE,
let's call that Universe Prime...
The Big Bang Theory Season 2, Episode 18
♪ Our whole UNIVERSE
was in a hot, dense state ♪
The Big Bang Theory Season 12, Episode 3
♪ Our whole UNIVERSE
was in a hot, dense state ♪
The Big Bang Theory Season 7, Episode 13