- During the Sun Probe launch sequence, Colonel Benson is voiced by David Graham, but when he appears of TV requesting International Rescue's help, he is voiced by Ray Barrett.
Colonel Benson,
voiced by David Graham
voiced by David Graham
Colonel Benson,
voiced by Ray Barrett
voiced by Ray Barrett
- During the television report about the Sun Probe, a cutaway shows the control cabin in the Probe Module, but later, when the Module is fired into the prominence, we learn that the control cabin is actually in the main body of the Sun Probe Rocket.
Cutaway illustration shows the control cabin in the probe module.
Probe module being fired into the prominence.
- When Alan, Scott and Tin-Tin set off on the settee to Thunderbird 3's hangar, Alan is on the right of the settee, with Tin-Tin between him and Scott, but during the descent onto the trolley, transportation to the hangar and ascent into Thunderbird 3, Alan and Scott have swapped seats. However, when they arrive aboard the spaceship, they are in their original positions again.
- When the cliff face drops down for Thunderbird 2 to launch, it appears Pod 3 has been selected as Pod 2 is clearly visible to the port side of Thunderbird 2, but when Virgil and Brains have arrived at Mount Arkan, the Transmitter Truck emerges from Pod 6. The error appears again in Vault Of Death, Move - And You're Dead, Martian Invasion, The Perils of Penelope and Day of Disaster.
Pod 2 can been seen to Thunderbird 2's port side
Pod 6 can be seen when Thunderbird arrives at Mount Arkan
- When Virgil radios to Jeff that he is about to land on Mount Arkan, Jeff asks him what the weather's like, to which Virgil replies: "Pretty stormy, Father. Pretty stormy" Then we cut to an exterior of the airborne Thunderbird 2, which is absolutely covered in snow. Just moments later we get a long shot and suddenly Thunderbird 2 is no longer covered in snow. We then get a close-up of the cockpit view, where we see Virgil and Brains, and Thunderbird 2 is covered in snow again.
Thunderbird 2 covered in snow
Long shot of Thunderbird 2 (no snow)
Close-up of cockpit
- In the first chess-playing scene, Braman plays an illegal move in an illegal position, but Brains still calls it a "good move".
- In the third chess-playing scene, the orientation of the chessboard is incorrect, as for both players, there is a white square in the bottom left corner.
- When the solarnauts hear International Rescue come through on their radio, a close-up of Thunderbird 3's radio is shown instead.
- Through the passage of time on our side, the location of the solar control center has not been known as Cape Kennedy since 1973. This title was only used for ten years from 1963 (between which the show was filmed) until reverting back to being called Cape Canaveral.