The Deep Space Habitat project is an attempt to work out optimum size of capsule, equipment and resources to send outside of the Earth-Moon system and into deep space and support a human crew of four.
|L2 is probable location|
|Artist concept of L2 station|
Apollo 11 lunar astronaut Buzz Aldrin has long urged NASA to set up a similar "floating launching pad" at a different balance point between Earth and the Moon, called EML-1 or L1, and he told io9 that platforms at L1 or L2, plus fueling depots for spaceships, would serve as appropriate "intermediate steps" for voyages to Mars and other worlds.
|Bigelow Aerospace lunar habitat|
|Aldrin touted Phobos to President Obama|