Continuity mistake: The alien's torn spacesuit sleeve somehow mends itself, but then is torn again a few shots later. (00:46:00 - 00:47:50)
Continuity mistake: General Stocker falls into a lunar quicksand pit and starts to sink. One arm disappears beneath the sand, but in the next shot, both his arms are outstretched and waving for help. (00:04:25)
Continuity mistake: In the lab, Anderson collapses with his arms crossed above his head. When the shot cuts, his arms are suddenly uncrossed. (00:21:30)
Continuity mistake: Dr. Brice's name tag is partially tucked under her collar when she's inside the lab. When she walks into the corridor, the tag has shifted position and is outside the collar. Later, back in the lab, the tag keeps changing from over to under her collar repeatedly. (00:32:50 - 00:36:50)
Continuity mistake: The cloth pillows stabilizing the moonstone on the lab counter change positions several times between takes. (00:40:15)
The Guests - S1-E26
Revealing mistake: The actress is playing chord progressions on the piano. As the camera starts to pan away, she takes her hands off the keys entirely - but the piano chords continue to play. (00:18:55)
Other mistake: Mace's chest camera sends images from impossible angles - including several that include Mace himself. At the end, his superiors watch him from a camera that's obviously mounted in a tree and not on his person. Yet when Mace smashes his chest camera, the transmission goes dead anyway. (00:48:00)
The Forms of Things Unknown - S1-E32
Continuity mistake: After running through the woods getting soaked by pouring rain, Casha arrives on Kollos' doorstep with her hair neatly coiffed and perfectly dry. In fact, within minutes of coming in out of the downpour, Casha, Leonora and Tone all have completely dry hair and clothes. (00:15:00)
Character mistake: Dr. Kagan, who's a scientist and should definitely know better, points to Earth's solar system on the chart and calls it "our galaxy." This is roughly the equivalent of mistaking a dot this size [.] for the entirety of North America. (00:23:30)
Cold Hands, Warm Heart - S2-E2
Revealing mistake: This 1964 episode is supposed to take place in its own near-future (the late 1960s). But some of the shots in the beginning reveal the use of outdated stock footage. During the parade, there's a close-up of a 48-star US flag, a relic even in '64, as Alaska and Hawaii became the 49th and 50th states in 1959. Old flags are supposed to be burned, and wouldn't have been used for civic events such as ticker-tape parades. (00:00:50)
Cold Hands, Warm Heart - S2-E2
Revealing mistake: Mismatched stock footage puts the Venus-bound Barton in four different spaceships during his journey. We see brief shots of a Vanguard rocket launch, an Atlas missile, a V-2 rocket sequence, and finally, special effects shots of the ship borrowed from the 1950s SF series "Men Into Space." Not one of these vehicles even remotely resembles any of the others. (00:23:15)
Cold Hands, Warm Heart - S2-E2
Factual error: While orbiting Venus, Barton receives instant responses to his radio communications with Earth. At that distance, there'd be a transmission delay: at least 7-8 minutes. (00:25:00)
Cold Hands, Warm Heart - S2-E2
Factual error: Barton's ship, we're told, has been designed only to orbit Venus, not land there. Yet he somehow lands anyway - on a planet with atmospheric pressure and broiling temperatures that should have crushed and incinerated him instantly. (00:25:30)
Cold Hands, Warm Heart - S2-E2
Visible crew/equipment: Barton is terrified by a plant-like alien floating outside his spaceship window. The Venusian critter might be a heck of a lot scarier if it bore less resemblance to a furry stalk of celery - and if only its puppet strings weren't showing. (00:25:45)
Behold, Eck! - S2-E3
Continuity mistake: Eck tears a leaf from Stone's notebook. But the close-up insert of the page and the following shot of it being torn out reveal two completely different sheets of paper. The first has only a brief list of four names and addresses. The second is covered with handwritten notes. They don't match, yet they're supposed to be the same page. (00:04:05)
Behold, Eck! - S2-E3
Continuity mistake: When Dr. Stone's assistant helps him up from the floor, there's a lopsided, circular diagram drawn on the chalkboard behind them. One shot later, the diagram has changed into a perfectly round circle and has moved itself several inches higher on the board. (00:06:10)
Behold, Eck! - S2-E3
Plot hole: Eck gives Dr. Stone one of his eyes so the scientist can create a lens to improve the alien's vision. At the end, Stone hands Eck the lens, but not the eye. When Eck puts on the lens, his missing eye reappears out of nowhere. (00:48:30)
Character mistake: Someone in the set decorating department must have failed first-year Spanish. The name of the apartment complex (Spanish for "The Flowers") is prominently displayed over the archway, but has both words misspelled, reading "Los Floras." It should be "Las Flores." (00:06:20)
Visible crew/equipment: After Roy forces Peter to drink the formula, the boom shadow makes a very intrusive appearance on the wall above them. (00:42:40)
Continuity mistake: At the end, the unconscious Lt. Branch changes position on the floor between takes. (00:45:05)
