In the envisioned year of 1980, the United States Air Force's Space Exploration Wing has successfully established permanent operational bases on the Moon and is aggressively preparing for the first crewed mission to Mars. The world is characterized by a militarized approach to cosmic exploration, where the Space Exploration Wing serves as the primary vanguard against the unknown hazards of the vacuum, including meteor showers and mysterious disappearances of spacecraft.

Society on Earth remains largely focused on the geopolitical prestige of the space race, with technological development centered on rocketry and life support. However, the film's narrative shifts to the planetoid Rheton, an invisible "phantom planet" inhabited by a six-inch-tall humanoid civilization. Earth is portrayed as the "giant" world of origin, a source of rescue and biological normalcy. The Rhetonians utilize advanced gravity control and magnetic fields to create solid defensive walls and manipulate matter, representing a level of technological mastery far beyond the contemporary 1980s setting of the film.

The film accurately predicted the continued use of thrust vectoring for spacecraft maneuvering and the necessity of extravehicular activity (EVA) for hull repairs, though it wildly overestimated the timeline for Mars colonization. While the film's 1980 featured permanent lunar outposts, the real-world 1980 saw the conclusion of the Apollo era and a pivot toward low-earth orbit via the Space Shuttle program. The concept of a universal translator based on "voice tone waves" remains a staple of sci-fi that has only recently found a real-world analog in AI-driven real-time translation.