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Devac  ·  1263 days ago  ·  link  ·    ·  parent  ·  post: A sober discussion: Aliens on Earth

    We are viewing the question from inside our own heads and experience.

Yes, but it's not that hard to theorize outside that bony box. Bacteria can survive on ionizing radiation alone, I'd have no problem with a species that goes "3.6 Roentgen? Yum!" that traverses space in a fissionable self-sustaining arc.

Gonna sleep on those questions, though.