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Desert planet

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Desert planet

A desert planet or dry planet is a theoretical type of terrestrial planet with very little water. The concept has become a common setting in science fiction,[1] appearing as early as the 1956 film Forbidden Planet and Frank Herbert's 1965 novel Dune.[2][3][4]

Habitability

A 2011 study suggested that not only are life-sustaining desert planets possible, but that they might be more common than Earth-like planets.[5] The study found that, when modeled, desert planets had a much larger habitable zone than watery planets.[5]

The same study also speculated that Venus may have once been a habitable desert planet as recently as 1 billion years ago.[5] It is also predicted that Earth will become a desert planet within a billion years due to the Sun's increasing luminosity.[5]

A study conducted in 2013 concluded that hot desert planets without runaway greenhouse effect can exist in 0.5 AU around Sun-like stars. In that study, it was concluded that a minimum humidity of 1% is needed to wash off carbon dioxide from the atmosphere, but too much water can act as a greenhouse gas itself. Higher atmospheric pressures increase the range in which the water can remain liquid.[6]

See also

References

  1. ^ Touponce, William F. (1988). "Intellectual Background". Frank Herbert.  
  2. ^ Wright, Les. (1956)"Forbidden Planet". Culturevulture.net ( 
  3. ^ Hladik, Tamara I. "Dune"Classic Sci-Fi Reviews: . SciFi.com. Archived from the original on April 20, 2008. Retrieved April 20, 2008. 
  4. ^ Michaud, Jon (July 12, 2013). Endures"Dune". NewYorker.com.  
  5. ^ a b c d Choi, Charles Q. (September 2, 2011). Planets"Dune"Alien Life More Likely on . Retrieved June 12, 2014. 
  6. ^ Andras Zsom; Sara Seager; Julien de Wit; Vlada Stamenkovic (September 4, 2013). "Towards the Minimum Inner Edge Distance of the Habitable Zone".  
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