The version titled "Space Travelers" is the one spoofed by Mystery Science Theater 3000. In this version, the scene where Celia Pruett learns of her husband's death is accompanied by a truly AWFUL electronic score (it sounds literally like random keys played on a toy synthesizer, something MST3K made note of). The original version has no music during this scene (and almost no other music; a muted, very low-key score can be heard when Pruett leaves the ship to "fix" it).