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Q&A How feasible would be smallish (1km radius) space station / artifical planet with something dense in the middle for gravity and energy

I was wondering about feasibility of small 'shell' world build around something very dense, like black hole or some 'artificial mini star' that could also be source of energy, and of course gave us...

2 answers  ·  posted 7y ago by Raksha Cat‭  ·  last activity 7y ago by Raksha Cat‭

Question space gravity space-constructs science-fiction