On the probability of habitable planets

  title={On the probability of habitable planets},
  author={François Forget},
  journal={International Journal of Astrobiology},
  pages={177 - 185}
  • F. Forget
  • Published 1 December 2012
  • Physics, Geology
  • International Journal of Astrobiology
Abstract In the past 15 years, astronomers have revealed that a significant fraction of the stars should harbour planets and that it is likely that terrestrial planets are abundant in our galaxy. Among these planets, how many are habitable, i.e. suitable for life and its evolution? These questions have been discussed for years and we are slowly making progress. Liquid water remains the key criterion for habitability. It can exist in the interior of a variety of planetary bodies, but it is… 
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