“Only since the collapse of the Soviet Union have we learned that the Soviets were in fact developing a moon rocket, known as the N1, in the sixties. All four launch attempts of the N1 ended in explosions. Saturn was the largest rocket in the world, the most complex and powerful ever to fly, and remains so to this day. The fact that it was developed for a peaceful purpose is an exception to every pattern of history, and this is one of the legacies of Apollo.” SpaceApolloNasaSpace TravelSpaceflightN1Saturn V Book:Leaving Orbit: Notes from the Last Days of American Spaceflight Source: Leaving Orbit: Notes from the Last Days of American Spaceflight