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Continuity mistake: In the laboratory, the lenses of the Martian camera were tilted in the frame in the closeup, then righted in the wide shot.

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Trivia: If the two Martian machines that crash in Los Angeles look the same but from different angles, that's because it's really the same machine from a different angle with the film image reversed.

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Revealing mistake: As the command post is engulfed by fire, one (stuntman) soldier comes crashing through and over a table. As he does, the gloves he wore to protect his hands during the fire scene are visible. Nobody else was wearing gloves. (00:38:00)

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Revealing mistake: As Forrester is easing up to check the Martian arm, a second Martian flyer crashes. As it does, you can tell that it is a re-use of the first one crashing, but flipped so that it's hitting left side first rather than right side first.

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Revealing mistake: After Forrester picks up the school bus sign, there's a shot of a Martian machine blasting at a bridge. Looking closely, the light poles can be seen through the machine, showing the model was matted over the background.

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Other mistake: In the War Room, the Martians' movements are demonstrated on a chalkboard, but push pins easily go into it a moment later as if it were cardboard or sheet rock.

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Other mistake: In the farmhouse, when Sylvia looks out and sees movement, she claims it was too dark to see. However, the Martian was lit up enough to be seen from a distance, and details on it were seen.

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Other mistake: When the people in the bunker are watching the Reverend walking, there is a distinct meshing of two separate scenes.

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Revealing mistake: In the first scene of the crashed meteor, on the extreme left of the scene where the smoke is, it seems to be billowing up from behind a stage wall, as there is a definite vertical line and a gap between the smoke and the left edge of the frame.

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Continuity mistake: When the Martian probe is being demonstrated in the lab, as it first comes on, it's slightly tilted. As the camera is in wide shot, the probe is straight up.

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Revealing mistake: When the military starts firing, not only do you see the wires holding the saucers, but the "electromagnetic shields" can be seen as glass or plastic domes, as the studio lighting is reflecting in them.

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