The "Planets" song in this episode is available on the album Dance and Sing: The Best of Nick Jr. (edit) Mailtime Segment: Mailbox pops in upside-down, saying that he's trying an experiment. When Steve first opens the letter, he finds that it too is upside-down. In the letter, some kids experiment with magnets. They find that a magnet won't stick to a plastic cup, but will stick to paper clips. (edit) Angela Santomero is credited as Angela C. Santomero and Jenna Marie Castle is credited as Jenna Castle. (edit)

Steve: A clue. That's a good question. I wonder if a clue sinks or floats. (edit) Steve: Water looks kind of like this big, shapeless, amorphous shape. (edit)

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