Eta-Earth Revisited II: Deriving a Maximum Number of Earth-Like Habitats in the Galactic Disk
Manuel ScherfIGAM/Institute of Physics, University of Graz, Graz, AustriaH. LammerSpace Research Institute, Austrian Academy of Sciences, Graz AustriaLaurenz SproßIGAM/Institute of Physics, University of Graz, Graz, Austria
2024en
ABI
Abstract
, the origin of life, working carbon-silicate and nitrogen cycles); this also implies extraterrestrial intelligence (ETI) to be significantly rarer still. Our results illustrate that not every star can host EHs nor can each rocky exoplanet within the HZCL evolve such that it might be able to host complex animal-like life or even ETIs. The Copernican Principle of Mediocrity therefore cannot be applied to infer that such life will be common in the galaxy.
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