 He decided one of the astronauts, "the best looking one", should narrate the film.Bogdanovich wrote the narration and provided the voice; it was the one credit he took on the film.Bogdanovich also stated he did not claim credit as director, because "such a small piece of it is mine", although in fact his adaptation of the "Planeta Bur" material had much more original material than the other, made by Curtis Harrington.