"In the just-released trailer for the third Transformers movie, the premise is that the Apollo missions were a cover to explore a downed alien spacecraft. When the moon spins and the Apollo landing area is no longer facing Earth, the astronauts climb a ridge and explore the massive alien craft which is mere feet away from the Lunar Module. When the moon spins back, the astronauts quickly return to the lander and pretend to be collecting rocks. But the moon revolves such that we always see the same side. This makes the opening premise of the movie impossible, because any alien craft that landed in the Sea of Tranquility would have been continuously observable from Earth with a decent telescope."