For years there have been rumours that the Apollo lunar landings were faked, staged on a movie set to convince the world that the US had beaten the Soviets to the Moon. And, despite evidence to the contrary, the belief that the "one small step for man" was a sham continues to spread. Now, having tried to stay above the rumours, the US space agency (Nasa) has finally got fed up with the conspiracy theorists and asked James Oberg, a leading aerospace writer, to produce a book that it hopes will settle the issue. But will it work, or will...