The Seventh Landing: Going Back to the Moon, This Time to Stay

It's been thirty-five years since people last trod the dusty plains of the Moon. Over the course of six landings from 1969 to 1972, twelve men explored, four-wheeled, dug and hiked across the lunar surface. Now, NASA has plans for a seventh landing on the Moon. This time, they want to stay. NASA's plans, dubbed the Constellation architecture, involve the largest launch vehicle ever built, new types of propulsion, and a six-person vehicle to ferry crews from Earth to the Moon. But NASA's pla...