Goofs for
20 Million Miles to Earth (1957) More at IMDbPro »

• Continuity: During the barn sequence the farmer is seen in two different positions when the Ymir is cornered.
  
  
• Miscellaneous: The general and scientist consult a wall map of the world to locate the small village in Sicily where the rocket has crashed. At the end of the scene the camera pulls in for a close-up of Sicily, and we see that there are no city names printed on the map - not even major Sicilian cities like Syracuse or Palermo, let alone a tiny fishing village.
  
  
• Continuity: Near the beginning of the film, William Hopper has obviously been in the hospital for a few days but when he finally wakes up and jumps out of bed, he is wearing a perfectly-pressed uniform.
  
  

• Continuity: Near the beginning when the spaceship starts to sink, the meteor hole starts to go under water. The next shot is from the inside and the hole is still above the waterline. The next shot is outside and the hole is almost covered with water.
  
  
• Plot holes: A scientist explains that the reason bullets will not hurt Ymir is that the beast has neither heart nor lungs; but we see its chest expand and contract, as if it is breathing. In addition, if the Ymir has no lungs, why does he have nostrils?
  
  
• Continuity: As the fishermen row away from the sinking spacecraft, we have a clear view of the inside of their small boat. The two astronauts they've just rescued are nowhere to be seen.
  
  
• Continuity: The Marines board the helicopter with plain metal helmets. Later, they assemble wearing cloth camouflage helmet covers.
  
  
• Miscellaneous: In the opening titles, director of photography Carlo Ventimiglia is credited as Carlos Ventigmilia.
  
  
• Factual errors: William Hopper's character, an Air Force Colonel (note clouds and lightning bolts on hat brim) would be wearing a navy blue hat with his tan uniform, not an olive drab Army hat. Also, General's stars and Colonel's eagles would be silver, not gold. (Colorized 50th Anniversary version).
  
  
• Continuity: A fisherman tells another to get the boat hook out. Yet in the prior shot, the boat hook is already extended.
  
  
• Errors made by characters (possibly deliberate errors by the filmmakers): The General, fearing that the space ship has sunk, points to a body of water on the map and says that the lost astronauts are now "20,000 Leagues under the Sea." Of course, it's a coy reference to the recent sci-fi flick (and Jules Verne's novel). However, a league is about 3 miles; no ship could sink 60,000 miles under the sea since the earth isn't that large. The Verne title refers to the amount of miles traveled under the sea, not how deep the craft was operating. So the General has made a geographical error while trying to make a hip quip.
  
  
• Revealing mistakes: The General says they are looking for a metal canister, and it does have metal bands around it but the canister itself is opaque - clearly plastic.
  
  
• Continuity: During the fight in the barn the plot stain on the Colonel's bandage grows from a small spot to two long streaks and then to a large stain covering most of the bandage. But when Joan Taylor asks to change the bandage the stain has shrank to about half the size.
  
  
• Factual errors: The Ymir is described as having no heart of lungs and being invulnerable to bullets since its insides are a series of tiny tubes. Yet in the finale, a direct bazooka hit mortally wounds it and it falls to its death from the Colosseum.
  
  

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