Is there an upward limit to the size of spacecraft with “Centrifugal” gravity?

I highly recommend to read: O’Neill, G. K: The Colonization of Space, Physics Today, vol. 27, no. 9, Sept. 1974, pp. 32–40. Up to 16km radius is doable with usual materials. Conservative estimations with old steel (1920) 3.2km O’Neill, G. K: The Colonization of Space, Physics Today, vol. 27, no. 9, Sept. 1974, pp. 32–40. One … More Is there an upward limit to the size of spacecraft with “Centrifugal” gravity?

Giant Planetary Ring Bases, are they feasible?

Q:Giant Planetary Ring Bases (or GPRB’s) are space stations built on planetary rings or are artificial rings themselves, such as Starship Troopers’ Luna Base. But are these super stations feasible? Assuming the ring is 30 by 30 meters all the way around the planet, would it be realistic to build such a structure? A: Yes, … More Giant Planetary Ring Bases, are they feasible?