Trivia / First Spaceship on Venus

• Creator Backlash: Stanisław Lem, who wrote the novel this film was based on (The Astronauts), disowned the movie after seeing it.
• Science Marches On: Oh, dear God, yes, if you knew anything about Venus. Let's just say it'd take a little more than a pressure suit to walk around the planet.
  • At the time the movie was made radiotelescope observations of Venus showed that the planet was unusually noisy on some frequencies. There were two theories for this: either the planet had a very hot surface, or it had a very dense ionosphere - an atmospheric layer with charged particles. The latter could still allow for temperate conditions on the surface. The Cosmostrator's inability to communicate with Earth due to radio interference is a reference to the "hot ionosphere" model. However, by December 1962 the Mariner 2 probe proved that the hot surface theory was the correct one.