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Q&A Could life in a planemo be sustained by cosmic background radiation?

I need to create a race that should be utterly older than humanity (and as such, much more powerful). My idea is to have that race originate from a rock planemo - a rogue planet, orbiting the cente...

3 answers  ·  posted 10y ago by Jorge Aldo‭  ·  last activity 5y ago by Jorge Aldo‭