Not only have NASA planned their very own MMO, but it looks like they have already made quite the progress in achieving it. The game, known as Astronaut: Mars, Moon, and Beyond, will have a fully functional demo in 2010. They have already released a teaser on their website. The game will be set in 2035 when humanity struggles for survival, building settlements on other planets and using celestial bodies.
According to NASA, their first video game was developed to promote science, technology, engineering, and mathematics learning, and NASA as an organization. The game uses the Unreal engine and is co-developed between Wisdom Tools, Project Whitecard, and Virtual Heroes.
Article from Gamersyndrome.com