♪ Then nearly 14 billion years
ago EXPANSION started... Wait! ♪
The Big Bang Theory Season 12, Episode 4
♪ Then nearly 14 billion years
ago EXPANSION started... Wait! ♪
The Big Bang Theory Season 12, Episode 20
Ka'a EXPANSION pack.
The Big Bang Theory Season 5, Episode 10
of the EXPANSION of the early
universe on the nursery wall
The Big Bang Theory Season 5, Episode 6