Continuity: In the underground bunker Carol and Dr. Marvin listen to the aliens voice from the slowed down tape recorder. At first we see the tape in the middle of the spool than ten seconds later it jumps to the end. (Time) Submitted by ????

Audio problem: Dr. Marvin watches the magnetic interference unit take down an alien spaceship and says, "…saucer hit and down in the Potomac". If you look closely his lips do not match what we hear. (Time) Submitted by ????

Continuity: As the aliens announce their intentions to the people of earth Dr. Marvin walks up to a radio in the back of the lab and says, "If I'm right they'll sail into Washington in broad daylight…". If you look closely the radio is pointing to a different station that it was when we saw it previously in the scene even though no one has gone near it. (Time) Submitted by ????

Deliberate "mistake": After the aliens announce their intentions Dr. Marvin meets with Carol back at their hotel room. He tells her that she must take a flight alone back to Palm Springs and then leaves the room. In the end of the scene she picks up a copy of The Evening Star, which is an obvious prop as it has no date on it. (Time) Submitted by ????

Visible crew/equipment: Watching the alien spaceship that lands outside the Belmont lab they all get out of the car and Carol says, "I'll get them from Russ". If you look closely as she opens her door, the reflection of the crew can be seen in the passenger side vent window. (Time) Submitted by ????

Deliberate "mistake": As the alien ship attacks and destroys the bomber with it's ray gun we see stock footage of a different WWII bomber being destroyed by the German Air Force. (Time) Submitted by ????

Continuity: We see the head of the alien up close twice and each time the gravel underneath is raked differently. (Time) Submitted by ????

Deliberate "mistake": As the Marvin's approach "Operation Sky Hook" they hear the UFO above. Out the rear view window we can see the same sign and background they passed several minutes ago when the doctor started making his tape recording. (Time) Submitted by ????

Continuity: The UFO flies right over the cockpit of a United Airlines jetliner but does not leave a shadow. (Time) Submitted by ????

Audio problem: After Prof. Kanter is incinerated by the alien's beam, Maj. Huglin points his shotgun at the alien and fires. If you look closely he pulls the trigger the first time and the gun misfires and you can see the recoil but not hear anything. (Time) Submitted by ????