
Voyager the space PROBE,
or Voyager the Star Trek TV show?
The Big Bang Theory Season 8, Episode 6

Is this about the PROBE
he's working on without you?
The Big Bang Theory Season 8, Episode 21

- The space PROBE.
- Good.
The Big Bang Theory Season 8, Episode 6

And, of course, it's Gravity Probe B.
The Big Bang Theory Season 1, Episode 13

The plaque they sent on the Pioneer PROBE
had a drawing of a naked man and woman.
The Big Bang Theory Season 8, Episode 21