Trivia: This is the second episode in which time moves much faster on a planet than on Voyager. The first is season five's "Gravity".
The Doctor: What if they're big purple blobs of protoplasm?
Janeway: Then you'll be the best-looking blob on the planet.
Janeway: I hope you're not disappointed.
Daniel: How often does your very first dream come true?
The Doctor: Marissa even composed an aria based on the skyship. I sang the lyrics.
The Doctor: (smiling) She was my... (looking at B'Elanna with a straight face) ...roommate.
Near the beginning of the episode, Tuvok errs in his remark, "it also resembles a quasar in that it has a high rate of rotation". He should have said pulsar instead since a pulsar rotates where as a quasar does not.