User blog comment:Dragon´s Blade/World Coexistence Alliance/@comment-24664052-20140716114430/@comment-98.211.214.12-20140716134914

Rodney: With all that, you can make one. Normally, the dimensions for such a colony would be pretty big. Practically the size of a large city. Those are called O'Neill cylinders. They use centrifugal force by rotating to maintain artificial gravity.