Which is also called
The Hitchhiker's Guide to the Galaxy.
The Big Bang Theory Season 8, Episode 8
The Milky Way is a GALAXY in space.
The Big Bang Theory Season 6, Episode 5
Hitchhiker's Guide
to the Galaxy.
The Big Bang Theory Season 7, Episode 6
...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
Yeah, see, if you just change the story
to the destruction of a GALAXY,
The Big Bang Theory Season 9, Episode 14