...but to elaborate,
I am going to the Arctic Circle...
The Big Bang Theory Season 2, Episode 23
I don't know what Arctic expedition
you were on...
The Big Bang Theory Season 3, Episode 1
...the invitation
to join the Arctic expedition.
The Big Bang Theory Season 2, Episode 23
You know, last time, I was able to book
a cruise to the Arctic to see a solar eclipse.
The Big Bang Theory Season 1, Episode 5