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A desert planet, also known as a dry planet, an arid planet, or a dune planet, is a theoretical type of
A desert planet, also known as a dry planet, an arid planet, or a dune planet, is a theoretical type of terrestrial planet
A terrestrial planet, telluric planet, or rocky planet, is a planet that is composed primarily of silicate rocks or metals. Within the Solar System, the terrestrial planets accepted by the IAU are the inner planets closest to the Sun: Mercury, ...
with a surface consistency similar to Earth's hot deserts.
History
A 2011 study suggested that not only are life-sustaining desert planets possible, but that they might be more common than Earth-like planets. The study found that, when modeled, desert planets had a much largerhabitable zone
In astronomy and astrobiology, the circumstellar habitable zone (CHZ), or simply the habitable zone, is the range of orbits around a star within which a planetary surface can support liquid water given sufficient atmospheric pressure.J. F. Kast ...
than ocean planet
An ocean world, ocean planet, panthalassic planet, maritime world, water world or aquaplanet, is a type of planet that contains a substantial amount of water in form of oceans, either beneath the surface, as subsurface oceans, or on the surf ...
s. The same study also speculated that Venus
Venus is the second planet from the Sun. It is sometimes called Earth's "sister" or "twin" planet as it is almost as large and has a similar composition. As an interior planet to Earth, Venus (like Mercury) appears in Earth's sky never f ...
may have once been a habitable desert planet as recently as 1 billion years ago. It is also predicted that Earth will become a desert planet within a billion years due to the Sun
The Sun is the star at the center of the Solar System. It is a nearly perfect ball of hot plasma, heated to incandescence by nuclear fusion reactions in its core. The Sun radiates this energy mainly as light, ultraviolet, and infrared radi ...
's increasing luminosity.
A study conducted in 2013 concluded that hot desert planets without runaway greenhouse effect
A runaway greenhouse effect occurs when a planet's atmosphere contains greenhouse gas in an amount sufficient to block thermal radiation from leaving the planet, preventing the planet from cooling and from having liquid water on its surface. A ...
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.
Science fiction
The concept has become a common setting inscience fiction
Science fiction (sometimes shortened to Sci-Fi or SF) is a genre of speculative fiction which typically deals with imaginative and futuristic concepts such as advanced science and technology, space exploration, time travel, parallel uni ...
, appearing as early as the 1956 film ''Forbidden Planet
''Forbidden Planet'' is a 1956 American science fiction film from Metro-Goldwyn-Mayer, produced by Nicholas Nayfack, and directed by Fred M. Wilcox from a script by Cyril Hume that was based on an original film story by Allen Adler and Irvi ...
'' and Frank Herbert's 1965 novel '' Dune''. The environment of the desert planet Arrakis
Arrakis ()—informally known as Dune and later called Rakis—is a fictional desert planet featured in the ''Dune'' series of novels by Frank Herbert. Herbert's first novel in the series, 1965's ''Dune'', is considered one of the greatest scien ...
(also known as Dune) in the ''Dune'' franchise drew inspiration from the Middle East
The Middle East ( ar, الشرق الأوسط, ISO 233: ) is a geopolitical region commonly encompassing Arabia (including the Arabian Peninsula and Bahrain), Asia Minor (Asian part of Turkey except Hatay Province), East Thrace (Europ ...
, particularly the Arabian Peninsula and Persian Gulf
The Persian Gulf ( fa, خلیج فارس, translit=xalij-e fârs, lit=Gulf of Fars, ), sometimes called the ( ar, اَلْخَلِيْجُ ٱلْعَرَبِيُّ, Al-Khalīj al-ˁArabī), is a mediterranean sea in Western Asia. The bod ...
, as well as Mexico
Mexico (Spanish: México), officially the United Mexican States, is a country in the southern portion of North America. It is bordered to the north by the United States; to the south and west by the Pacific Ocean; to the southeast by Guatema ...
. ''Dune'' in turn inspired the desert planets which prominently appear in the '' Star Wars'' franchise, including the planets Tatooine
Tatooine () is a fictional desert planet that appears in the ''Star Wars'' franchise. It is a beige-colored, desolate world orbiting a pair of binary stars, and inhabited by human settlers and a variety of other life forms. The planet was first ...
, Geonosis
The fictional universe of the '' Star Wars'' franchise features multiple planets and moons. While only the feature films and selected other works are considered canon to the franchise since the 2012 acquisition of Lucasfilm by The Walt Dis ...
, and Jakku
Jakku is a fictional desert planet in the '' Star Wars'' universe, first featured in the 2015 film ''The Force Awakens''. Remote, lawless, and inhospitable, it is the homeworld of sequel trilogy protagonist Rey, played by Daisy Ridley, and ''A ...
.
See also
* Exoplanet *Ocean planet
An ocean world, ocean planet, panthalassic planet, maritime world, water world or aquaplanet, is a type of planet that contains a substantial amount of water in form of oceans, either beneath the surface, as subsurface oceans, or on the surf ...
References
{{DEFAULTSORT:Desert Planet Science fiction themes Fictional terrestrial planets Hypothetical planet types *Planet
A planet is a large, rounded astronomical body that is neither a star nor its remnant. The best available theory of planet formation is the nebular hypothesis, which posits that an interstellar cloud collapses out of a nebula to create a you ...