
Howard, didn't you say
you worked on the Mars rover?
The Big Bang Theory Season 2, Episode 8

Kind of a Mars rover...
The Big Bang Theory Season 2, Episode 8

He worked on
the Mars rover.
The Big Bang Theory Season 12, Episode 5

On Mars?
The Big Bang Theory Season 11, Episode 17

...he crashed the Mars Rover
while attempting to impress a woman.
The Big Bang Theory Season 4, Episode 7