Continuity mistake: The first time the two crew men in the moon buggy are seen, the numbers on their suits are eight and three. The next moon buggy scene, the two in the suits are numbered eight and three again at first, but when they're testing the domes, the numbers change to nine and zero.
Continuity mistake: As Zoreth looks around after his wife closes the door, he closes a book he's holding. A second later, he's holding it by one cover, the book hanging open.
Continuity mistake: The panel Tony hits with a tomahawk in his quarters first appears to be molded plastic, then in a close up, appears to be painted wood, as the wood grain where the panel above is smooth.
Continuity mistake: In the earlier part of the story, Tony was the only survivor and took the pointed module to escape. As Koenig and company return to the probe and dock, the module is back in place.
Continuity mistake: As the alien struggles with the security personnel, it's easy to tell the alien actor and the stunt double. The hair color and style change between distance and close up shots.
Continuity mistake: As Helena is tapping on the key panel, the row of black keys goes from second on the right to second on the left and back, showing the shot was reversed.
Continuity mistake: As the scene in Main Control gets blurrier as Koenig spins around, the part in his hair is first on the left, then on the right, then back on the left.
Space Brain - S1-E21
Continuity mistake: The number on Kelly's suit was 4. As Paul went to go out after Kelly, you see the number 4 on the control panel, then when he nears Kelly, it's changed to 3, suggesting the shot of the exiting person was re-used.
Continuity mistake: As the experiment recreation progresses, and Helena identifies the spirit, the spirit appears with damage on the left side of its face, and a yellow sleeve on its right arm. When the camera is close up to the spirit, the damage and yellow sleeve change sides.
The Testament of Arkadia - S1-E23
Continuity mistake: As Paul calls to all sections, he's standing over a console, but on the screens, there's a wall directly behind him, and the shadow of his head can be seen over his left shoulder.
Answer: Not necessarily - The gravitational fields of Earth and the Sun could have deflected the moon away from the solar system.
Seniram