A habitation module that provides an artificial gravity environment. In one embodiment, the habitation module includes a stationary structure and a rotating structure that rotates about an axis in relation to the stationary structure. The rotating structure includes a cylindrical body that is substantially hollow and closed at both ends, where the ends represent gravity chambers of the habitation module. There are center openings in the cylindrical body that are coaxially aligned on opposing sides of the cylindrical body along an axis of rotation. First and second hub members are permanently affixed to the cylindrical body on the opposing sides of the cylindrical body about the center openings. Radial seals that span gaps between the rotating structure and the stationary structure.