During the movie, during the dune buggy ride on the moon's surface you see and here the astronaut on the Lunar rover say, "There's no dust". And at the time he is saying that you see the wheels and they are in fact not raising up much dust at all. The slip-up is that if you watch the real NASA film of the Lunar Rover ride, you see that it is throwing up a lot of dust and here the astronauts comment on it. The remark about no dust is actually heard during the actual landing sequence of the lander, not on the dune buggy ride at all! The reason for this change in recorded history is that the original NASA video proves by Physics that the NASA Lunar Rover sequence was actually shot somewhere with atmosphere! Anyone with an understanding in high school Physics can see this in the NASA footage.The dust hits a wall and falls to the ground, and doesn't continue in a graceful arc going six times as far. Whoops......

So the shot in the movie covers up something that NASA would like to go away!