
What about loop quantum GRAVITY?
The Big Bang Theory Season 7, Episode 20

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

And how you threw up
in zero GRAVITY,
The Big Bang Theory Season 7, Episode 16

The idea that you might be able
to incorporate GRAVITY...
The Big Bang Theory Season 2, Episode 6

That'’s Sandra Bullock's
character in Gravity.
The Big Bang Theory Season 12, Episode 3