> Moon-based centrifuges allowing locomotion inside would pose technical challenges and demand substantial electrical energy. Comments: > would pose technical

> Moon-based centrifuges allowing locomotion inside would pose technical challenges and demand substantial electrical energy. Comments: > would pose technical challenges That's a very funny disadvantage to call out! "Technical challenges" are how you know you are on the moon. A stable rotating system would seem to be one of the simplest possible lunar challenges. If it is implemented within an existing environment shell, it could be quite low tech. > demand substantial electrical energy. Maintaining rotation in low Earth gravity should be a very low energy process. The only energy loss would be friction at the point of rotation, which should be minimal, and some position controlled weights, for maintaining balancing in the context of human movement. But the proposed no-tech solution has a great return on investment, and is realistic for early days, or infrequently inhabited outposts.