Trivia: Much has been written about the scene where Bowman enters the air lock without his helmet. Studies done by NASA have shown that humans can survive in vacuum for brief periods if they do not hold their breath. Some have commented that Dave appears to hold his breath before blowing the hatch, but careful study of the scene does not show this, as it seems he is simply grimacing, bracing himself for the coming effort. When the film was first shown in theaters, many of them handed out souvenir booklets which included references to this study.
Revealing mistake: When we see the space station from the cockpit of the approaching shuttle, the station does not appear to rotate because the shuttle is rotating at the same speed. OK...except that the station IS still rotating with respect to the sun, which means that the light source and shadows on the station should be moving.
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