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Q&A What kind of Apocalypse might make a planet unrecognizable within a few centuries?

Bobby, a human space traveler from Theta, and has been in space for a couple of centuries. He's been kept alive either through his own biology or some feat of technology. Having no contact with his...

6 answers  ·  posted 7y ago by Jim Wu‭  ·  last activity 7y ago by Jim Wu‭