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