NASA is engaging the Second Life crowd through an online emissary of sorts. Thus far they have created a replica of the Space Shuttle in the online world. They call their emissary the 'CoLab' complex, which exists on it's own island within the game. Some of the in-game personalities are working on lava tube habitats, others on Martian habitat's and terraforming. There is talk of creating worlds that look and feel like the moon or other heavenly bodies.