Factual error: In Mike's quarters, the poster of the Lunar Lander appears to have the Lander oriented incorrectly.
Earthbound - S1-E14
Character mistake: When Simmons tries to get out of the hibernation chamber, one of the aliens turns and looks at him, while the other one sits up. The shot pans back to Simmons face, then back at the aliens only to show them back in hibernation.
Other mistake: After the alien probe emits atmosphere on the surface, there's suddenly full gravity, as evidenced by the first two people walking normally. There was no mention of full gravity on the Moon's surface, as all walking before was in microgravity.
Revealing mistake: As the "dead" companion lies in the coffin, you can see him breathing.
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.
Character mistake: The Eagle Koenig flies is called Eagle One. However, the number on the door behind him is plainly a four, meaning Eagle Four.
Suggested correction: This happens a lot. The number on the door is not the number of the Eagle, it's the number of the command module. The super structure and drive systems are Eagle One. Even then, there has been several Eagle Ones destroyed or lost. Eagle One is assigned its designation by the head of Recon, Alan Carter.
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.
Other mistake: As the camera pans around to look in the cockpit, the wound on Koenig's head is easily seen as a bad blending job. The edges of the prosthetic are visible.
Other mistake: In the beginning, the Eagle was moving away from the alien planet, and as such, should have crash landed facing away from the planet. However, it was facing the direction it came from. If it traveled a fairly straight line, (and the trajectory suggests it did) then it should have crashed with the rear end facing the planet.
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.
Visible crew/equipment: In the beginning when the camera enters room 3C with the plants, a shadow of the cameraman can be seen on the door frame. (00:02:05)
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.
Revealing mistake: As the Eagle lands on the new planet, the wires for flying the model can be seen.