
♪ Then nearly 14 billion years
ago EXPANSION started... Wait! ♪
The Big Bang Theory Season 12, Episode 20

♪ Then nearly 14 billion years
ago EXPANSION started... Wait! ♪
The Big Bang Theory Season 5, Episode 4

♪ Then nearly 14 billion years
ago EXPANSION started... Wait! ♪
The Big Bang Theory Season 7, Episode 11

♪ Then nearly 14 billion years
ago EXPANSION started... Wait! ♪
The Big Bang Theory Season 7, Episode 15

♪ Then nearly 14 billion years
ago EXPANSION started... Wait! ♪
The Big Bang Theory Season 12, Episode 23