Exoplanet Habitability

@article{Seager2013ExoplanetH,
  title={Exoplanet Habitability},
  author={Sara Seager},
  journal={Science},
  year={2013},
  volume={340},
  pages={577 - 581}
}
  • S. Seager
  • Published 3 May 2013
  • Geology, Physics
  • Science
The search for exoplanets includes the promise to eventually find and identify habitable worlds. The thousands of known exoplanets and planet candidates are extremely diverse in terms of their masses or sizes, orbits, and host star type. The diversity extends to new kinds of planets, which are very common yet have no solar system counterparts. Even with the requirement that a planet’s surface temperature must be compatible with liquid water (because all life on Earth requires liquid water), a… 

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References

SHOWING 1-10 OF 32 REFERENCES

The Limits of Organic Life in Planetary Systems

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Publ. Astron. Soc. Pac

  • Publ. Astron. Soc. Pac
  • 2009

Astrophys. J

  • Astrophys. J
  • 1988

Earth Planet. Sci. Lett

  • Earth Planet. Sci. Lett
  • 2009

Astrophys. J

  • Astrophys. J
  • 2006

Astron. Astrophys

  • Astron. Astrophys
  • 2002

A slightly higher value of up to 500 K may be considered for stability of biomolecules

    Ber. Bunsenges. Phys. Chem

    • Ber. Bunsenges. Phys. Chem
    • 1981

    Univ. of Arizona Press Astrophys. J

    • Univ. of Arizona Press Astrophys. J
    • 2011