
I got to experience
zero GRAVITY.
The Big Bang Theory Season 5, Episode 18

It uses powerful electromagnets to create
a force strong enough to overcome GRAVITY.
The Big Bang Theory Season 6, Episode 5

Well, I have an extremely
low center of GRAVITY.
The Big Bang Theory Season 7, Episode 11

...for this university's
six-loop quantum GRAVITY calculations.
The Big Bang Theory Season 6, Episode 9

I don't know. In space you couldn't even
toss me a pen, and that was in zero GRAVITY.
The Big Bang Theory Season 8, Episode 3