It's in a GALAXY far, far away.
The Big Bang Theory Season 2, Episode 21
Yeah, see, if you just change the story
to the destruction of a GALAXY,
The Big Bang Theory Season 9, Episode 14
Which is also called
The Hitchhiker's Guide to the Galaxy.
The Big Bang Theory Season 8, Episode 8
...so that he could write an entry about Earth
for The Hitchhiker's Guide to the Galaxy.
The Big Bang Theory Season 8, Episode 8
the guardians of peace
and justice in the GALAXY.
The Big Bang Theory Season 9, Episode 11