The Astrobiological Copernican Weak and Strong Limits for Intelligent Life

@article{Westby2020TheAC,
  title={The Astrobiological Copernican Weak and Strong Limits for Intelligent Life},
  author={Tom Westby and Christopher J. Conselice},
  journal={The Astrophysical Journal},
  year={2020},
  volume={896}
}
We present a cosmic perspective on the search for life and examine the likely number of Communicating Extra-Terrestrial Intelligent (CETI) civilizations in our Galaxy by utilizing the latest astrophysical information. Our calculation involves Galactic star formation histories, metallicity distributions, and the likelihood of stars hosting Earth-like planets in their habitable zones, under specific assumptions which we describe as the Astrobiological Copernican Weak and Strong conditions. These… 

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