Forbidden Planet

Forbidden Planet is a landmark 1956 American science-fiction film produced by Metro-Goldwyn-Mayer.

Directed by Fred M. Wilcox, the film is considered a precursor to contemporary science-fiction cinema. It is famous for pioneering several cinematic milestones. It was the first science-fiction film to depict humans traveling in a human-made starship capable of faster-than-light travel. Additionally, it was the first film set entirely on a planet orbiting another star, far from our Solar System. Because of these innovations, the film is viewed as a foundational work for the genre.

The plot is set in the 23rd century on the distant planet Altair IV. The United Planets starship C-57D arrives to investigate the fate of the Bellerophon, a ship that vanished 20 years earlier. Upon landing, the crew meets Dr. Edward Morbius and his daughter, Altaira. They are also assisted by Robby the Robot, a character who displays a distinct personality. Morbius explains that a mysterious planetary force killed the original expedition. He reveals that he has been studying the Krell, an advanced race that disappeared 200,000 years ago. The Krell left behind a massive underground machine powered by 9,208 thermonuclear reactors.

The central conflict involves an invisible intruder that attacks the crew. Through scientific discovery, it is revealed that the Krell machine can manifest anything through mere thought. However, the machine also gave the Krell's subconscious desires free rein. This led to the creation of "monsters from the id," which caused the Krell's extinction. Dr. Morbius unknowingly used a Krell device to double his own intellect. This device allowed his own subconscious to create the invisible monster. The creature eventually attacks the crew and Morbius himself. The film concludes with the destruction of Altair IV to prevent further danger.

Creating the film required massive technical efforts and unique artistic methods. The production team built sets on a Metro-Goldwyn-Mayer sound stage in Culver City. Art director Arthur Lonergan built sets that were much larger than the budget allowed. To suggest the scale of the starship, a full-sized mock-up was built. This model represented roughly three-quarters of a ship that was 170 feet wide. The exterior landscapes of Altair IV were simulated using matte paintings and visual effects. This allowed the entire film to be shot indoors while appearing to be set in deep space.

The film's special effects were highly advanced for the 1950s. Animator Joshua Meador created the Id Monster using a unique process. He sketched the creature in black pencil on translucent vellum paper. These sketches were photographed in high contrast to leave only major details. The images were then reversed into negatives and tinted red. This created the effect of an invisible body with only red outlines visible. The monster was so frightening that some states edited its image out to protect children. The effects team was even nominated for an Academy Award for Best Special Effects.

Financial and musical details highlight the film's groundbreaking nature. The total budget for the production was approximately $1.9 million. Robby the Robot was a significant expense, costing $125,000. This amount represented almost 7% of the entire film's budget. In modern terms, the cost of the robot alone equates to at least $1 million in 2017 dollars. The film also featured the first entirely electronic musical score. Created by Bebe and Louis Barron, this score used electronic machines rather than traditional instruments. This was a major departure from the musical standards of the era.

Forbidden Planet remains a significant piece of cultural history. In 2013, the Library of Congress selected the film for preservation in the United States National Film Registry. This selection recognizes the film as being culturally, historically, or aesthetically significant. Scholars have noted that the characters and isolated setting resemble William Shakespeare's play, The Tempest. The film serves as a bridge between classical storytelling and modern space exploration themes. It continues to be studied for its influence on how science fiction is visualized and understood.