This is mainly for astronomers. In the famous scene where the town people are waiting on the side of the road for the UFO's to fly around the corner, as the camera angle faces "south" you can clearly see the constellation Scorpius. When the camera angle faces the opposite direction, presumably "north", you can see the constellation Orion. This is impossible since both constellations are Southern apparitons and appear at opposite times of the year. Orion is a Winter constellation and Scorpius is a summer constellation. I have to give Spielberg credit for at least having constellations. Most movies are just random patterns.