Penny is briefly seen reading a book, with her hand covering the front cover and tape covering writing and photos on the back. The book is one of the Nancy Drew Mystery Stories, "The Quest of the Missing Map".
The title is based on the Disney song 'When You Wish Upon a Star'.
This is the not first time the astrogator, the directional system which is at the center of the first floor of the Jupiter 2, is missing. The astrogator is a circular, domed console located at the center of the flight deck of the Jupiter 2. Its purpose is to plot and maintain the ship's course. It is equipped with manual override controls so that the pilot could alter the pre-set course when necessary. In its place is a round table and some chairs.