- First mainstream film to have the music performed entirely by electronic instruments.
- Louis Barron and Bebe Barron, worked on the electronic soundtrack music "tonalities" for only three months - the length of time given them by Dore Schary, Executive Producer at MGM. He authorized the studio to send them a complete workprint at Christmas 1955. They received the complete 35mm Eastmancolor workprint at New Year's 1956, a week later, still with many visual effects sequences missing and timed in with blank leader by the editor Ferris Webster. From January 1, 1956 to April 1, 1956, they worked on the soundtrack score in their Greenwich Village studio on the East Coast while the film was in post production in Culver City. The score was completed and delivered to Metro-Goldwyn-Mayer on April 1, 1956, and the film was released for a studio sneak preview soon afterward.
- Loosely based on Shakespeare's "The Tempest."
- The model of the "flying saucer" style Earth space cruiser was retained by the MGM prop department and subsequently used in a number of productions on the MGM lot, including an episode of the "Twilight Zone, The" (1959).
- Star Trek creator, Gene Roddenberry, eventually admitted this film was a major inspiration for his own science fiction TV series.
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