Eternity in six hours: Intergalactic spreading of intelligent life and sharpening the Fermi paradox

  title={Eternity in six hours: Intergalactic spreading of intelligent life and sharpening the Fermi paradox},
  author={S. Armstrong and A. Sandberg},
  journal={Acta Astronautica},
Abstract The Fermi paradox is the discrepancy between the strong likelihood of alien intelligent life emerging (under a wide variety of assumptions) and the absence of any visible evidence for such emergence. In this paper, we extend the Fermi paradox to not only life in this galaxy, but to other galaxies as well. We do this by demonstrating that travelling between galaxies – indeed even launching a colonisation project for the entire reachable universe – is a relatively simple task for a star… Expand

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