♪ Then nearly
14 BILLION years ago ♪
The Big Bang Theory Season 12, Episode 23
♪ Then nearly 14 BILLION years
ago expansion started... Wait! ♪
The Big Bang Theory Season 5, Episode 20
♪ 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 11, Episode 8