♪ Then nearly 14 billion years
ago EXPANSION started... Wait! ♪
The Big Bang Theory Season 5, Episode 21
♪ Then nearly 14 billion years
ago EXPANSION started... Wait! ♪
The Big Bang Theory Season 5, Episode 6
♪ Then nearly 14 billion years
ago EXPANSION started... Wait! ♪
The Big Bang Theory Season 12, Episode 8
♪ Then nearly 14 billion years
ago EXPANSION started... Wait! ♪
The Big Bang Theory Season 12, Episode 9
♪ Then nearly 14 billion years
ago EXPANSION started... Wait! ♪
The Big Bang Theory Season 12, Episode 13