The spaceship model was later used as a background set decoration in Star Trek II: The Wrath of Khan (1982).
The spaceship design was taken from Wernher von Braun's actual designs that appeared in a 1954 issue of Collier's.
After a dispute over how to depict the surface of Mars, Chesley Bonestell claimed never to have seen the final movie.
When Rosemary Clooney is seen on the space station's big screen singing the song "Ali Baba," it was taken from the 1953 Paramount release "Here Comes the Girls."
None of the actors' names appear in the opening credits. Their names appear only in the end credits.
Ross Martin's film debut.