- Prop Recycling: The Galaxy 6 is a reuse of the United Planets Cruiser C-57D from Forbidden Planet. The crew uniforms from the film are also reused.
- Recycled Set: The cavern where the survivors take shelter and have their meetings is a reuse of the Morlocks' lair from The Time Machine (1960).
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FollowingTrivia / The Twilight Zone (1959) S4E16: "On Thursday We Leave for Home"
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