Editing Habitable zone (section)

====Desert planets====
[[File:Tharsis and Valles Marineris - Mars Orbiter Mission (30055660701).png|thumb|Dry desert planets like Mars may be more common in the habitable zone than wet planets.]]
A planet's atmospheric conditions influence its ability to retain heat so that the location of the habitable zone is also specific to each type of planet: [[desert planet]]s (also known as dry planets), with very little water, will have less water vapor in the atmosphere than Earth and so have a reduced [[greenhouse effect]], meaning that a desert planet could maintain oases of water closer to its star than Earth is to the Sun. The lack of water also means there is less ice to reflect heat into space, so the outer edge of desert-planet habitable zones is further out.<ref>[http://www.astrobio.net/exclusive/4188/alien-life-more-likely-on-%E2%80%98dune%E2%80%99-planets Alien Life More Likely on 'Dune' Planets] {{webarchive |url=https://web.archive.org/web/20131202223111/http://www.astrobio.net/exclusive/4188/alien-life-more-likely-on-%E2%80%98dune%E2%80%99-planets |date=December 2, 2013 }}, 09/01/11, Charles Q. Choi, ''Astrobiology Magazine''</ref><ref>{{cite journal | doi = 10.1089/ast.2010.0545 | pmid=21707386 | volume=11 | title=Habitable zone limits for dry planets | year=2011 | journal=Astrobiology | pages=443–60 | last1 = Abe | first1 = Y | last2 = Abe-Ouchi | first2 = A | last3 = Sleep | first3 = NH | last4 = Zahnle | first4 = KJ| issue=5 | bibcode=2011AsBio..11..443A }}</ref>