The planet Metaluna begins collapsing and Exeter, Cal and Ruth escape and make their way back to Earth. On the way back, a Metalunan that was stowaway on the ship attacks and wounds Exeter. When they arrive on Earth, Cal and Ruth leave Exeter's ship on a biplane. Exeter dies of his wound and the ship, low on fuel, crashes into the ocean.
Character mistake: After Cal goes to the secret lab in Georgia, he and two others go into his new lab. When they enter a cat jumps up on the counter. Dr. Adams says "This is Neutron. We named him that because he's so positive." Neutrons are neutral and electrons are negative. It's protons that are positive. They should have named the cat Proton.mrfrede
The Monitor: It is indeed typical that you Earth people refuse to believe in the superiority of any world but your own. Children looking into a magnifying glass, imagining the image you see is the image of your true size.
Dr. Cal Meacham: Our true size is the size of our God.
Trivia: In the shot where scientist Cal Meacham is pulling the power plug from the Interocitor, the post supporting the triangular viewscreen is suddenly taller than in it is in any other scene. It appears to have been lengthened deliberately for this shot in order to raise the viewscreen above the top of the film frame. (00:20:40)orzel-w