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Q&A How big would a "Ring World" have to be to orbit a black hole?

In many Science Fiction books and games, there are worlds or planet-like objects that are rings that orbit (or float around in space) (some examples being the Halo (from Halo) or the Ringworld (fro...

4 answers  ·  posted 10y ago by Shadow Z.‭  ·  last activity 9y ago by Shadow Z.‭

Question space space-constructs black-holes