![Hmm, they say it could be a potential
indicator of life on other planets.
Hmm, they say it could be a potential
indicator of life on other planets.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
Hmm, they say it could be a potential
INDICATOR of life on other planets.
The Big Bang Theory Season 10, Episode 9
![Typically that's an indicator to,
you know, check your engine.
Typically that's an indicator to,
you know, check your engine.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
Typically that's an INDICATOR to,
you know, check your engine.
The Big Bang Theory Season 2, Episode 5
![which looks nothing like
a phenolphthalein indicator
which looks nothing like
a phenolphthalein indicator](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
which looks nothing like
a phenolphthalein INDICATOR
The Big Bang Theory Season 5, Episode 7
![No, I have met Bert, isn't he an indicator
of life on other planets?
No, I have met Bert, isn't he an indicator
of life on other planets?](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
No, I have met Bert, isn't he an INDICATOR
of life on other planets?
The Big Bang Theory Season 10, Episode 9