Continuity mistake: Prometheus is flown into the alien spacecraft, presumably to disable it from flying. However, after the alien craft has crashed and rolled over Meredith Vickers, the ship is facing face down on the planet, giving us a full shot of the back of the ship. There is no damage to the back of the bulkhead whatsoever, even after the bright explosion in the atmosphere. (01:43:00)
MeBeJedi
17th Feb 2013