Orbital ATK proposes man-tended lunar-orbit outpost by 2020 for link up with NASA's Orion

Orbital ATK has unveiled a practical new proposal to build a near term man-tended outpost in lunar orbit that could launch by 2020 and be operational in time for a lunar link-up with NASA's Orion crew module during its maiden mission, when American astronauts finally return to the moon's vicinity in 2021 - thus advancing America's next giant leap in human exploration of deep space.