Re:NASA Has Decided to Start Building the Lunar Gateway Usin...
by blackrock on Saturday February 20, 2021 @11:16PM
(#26210752)
That must be a giant rock that you must carve an internal loop out of.
And then, how much energy would it even take to spin such a huge rock? I think you’d need a new exotic propulsion system just to rotate it. Maybe nuclear or a sustained ion propulsion.
https://en.m.wikipedia.org/wiki/O%27Neill_cylinder