You know the new Discovery class missions
NASA's been working on?
The Big Bang Theory Season 8, Episode 21
Madam Curie's DISCOVERY of radium
turned out to have great potential...
The Big Bang Theory Season 1, Episode 2
I'm about to make
an important scientific DISCOVERY here.
The Big Bang Theory Season 4, Episode 9
You really think there's some kind of
scientific DISCOVERY in here?
The Big Bang Theory Season 6, Episode 3
...and she was poisoned to death
by her own DISCOVERY.
The Big Bang Theory Season 6, Episode 18