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    The 10 Biggest Movie Mistakes Of 2013

    This eclectic collection of screw-ups includes magically appearing crash helmets, changing headlights (in two different movies - clearly a common problem!), and misaligned orbits.

    1. Gravity

    The shuttle's original mission was to service Hubble, yet when the shuttle is wrecked, Kowalsky moves with Stone to the ISS, which just happens to be "a short hike away." Hubble orbits at an altitude of 350 miles/560km, while the ISS does so at an altitude of about 250 miles/410km. Furthermore, even if they had been able to see the ISS from Hubble's orbit, they would have only seen it speed ahead, as their orbital velocities are very different: 7.66km per second for the ISS and 7.5km per second for Hubble.

    2. A Good Day to Die Hard

    3. The Hangover Part III

    Chow is carrying around $21 million in gold bullion. A bar weighs 400 ounces. Gold prices at that time were around $1,200 per ounce, and he's got two bags, therefore he's supposedly carrying 8,750 ounces, or about 550lb, on each arm.

    4. Iron Man 3

    5. Now You See Me

    The agents arrive at the Four Horsemen's apartment to arrest them. In the shot where Dylan exits the car, the reflection of the boom mic is visible in the other car's window.

    6. Star Trek Into Darkness

    7. The Wolverine

    The bombing altitude for Nagasaki was 30,000 feet (~10 km), but in the opening scene the planes bombing Nagasaki are a lot lower than that. The bomb also detonated at 1,500 feet, not at ground level as shown.

    8. Fast & Furious 6

    During the runway scene, Shaw's vehicle is seen fitted with HID type headlights (bluish tinge). Yet during the sweeping wide angle shots and when Shaw drives into the cargo plane, the lights are a standard yellow.

    9. World War Z

    10. Gangster Squad

    In a scene where the nightclub singer with the tropical fruit headwear is on stage, she is singing into a classic RCA 77D microphone which is correct for the period, but in a mistake often made in movies that are set in this era, the microphone is wrongly positioned. It is leaning toward the singer when in fact this type of mic is spoken to from the side, not the end. To work correctly it was always pointed away from the singer or placed in a vertical position for side pickup.