When the Mars rover
started pulling to the left...
The Big Bang Theory Season 1, Episode 14
You started by asking if I was from Mars
because my ass was out of this world.
The Big Bang Theory Season 2, Episode 8
...a working prototype of the Mars Rover.
The Big Bang Theory Season 8, Episode 3
I got the Mars rover stuck in a ditch.
The Big Bang Theory Season 2, Episode 8
Yeah, I want to go to the
Moon, I want to go to Mars.
The Big Bang Theory Season 5, Episode 5