Caladan
Encyclopedia
Caladan is a fictional planet in the Dune universe
Dune universe
Dune is a science fiction franchise which originated with the 1965 novel Dune by Frank Herbert. Considered by many to be the greatest science fiction novel of all time, Dune is frequently cited as the best-selling science fiction novel in history...

 created by Frank Herbert
Frank Herbert
Franklin Patrick Herbert, Jr. was a critically acclaimed and commercially successful American science fiction author. Although a short story author, he is best known for his novels, most notably Dune and its five sequels...

, first mentioned in the 1965 novel Dune
Dune (novel)
Dune is a science fiction novel written by Frank Herbert, published in 1965. It won the Hugo Award in 1966, and the inaugural Nebula Award for Best Novel...

.

Overview

Caladan, the third planet of Delta Pavonis
Delta Pavonis
Delta Pavonis is a star about 19.9 light years away from Earth. It is in the constellation Pavo.-Observations:It is a subgiant of spectral type G8 IV, meaning it is about to stop fusing hydrogen in its core and is starting the process of becoming a red giant. Because of that, Delta Pavonis is...

, is the ancestral fiefdom of House Atreides
House Atreides
House Atreides is a fictional noble family from the Dune universe created by Frank Herbert. One of the Great Houses of the feudal interstellar empire known as the Imperium, its members play a role in every novel in the series. It is suggested within the series that the root of the Atreides line...

, who have ruled it for twenty-six generations, from the ancient Castle Caladan. An ocean planet
Ocean planet
An ocean planet is a hypothetical type of planet whose surface is completely covered with an ocean of water.Planetary objects that form in the outer solar system begin as a comet-like mixture of roughly half water and half rock by mass...

, Caladan's surface is predominantly covered with water; its climate is characterized by much precipitation and strong winds, but is tolerable enough to make special and expensive weather control measures unnecessary. Habitable land is often characterized by soft meadows, swamps, and dense forests. The resource base of Caladan consists mainly of agriculture and biomass, with fishing and the locally grown pundi rice serving as the primary sources of sustenance for its people. Other traditional products include wine, whale fur, coral
Coral
Corals are marine animals in class Anthozoa of phylum Cnidaria typically living in compact colonies of many identical individual "polyps". The group includes the important reef builders that inhabit tropical oceans and secrete calcium carbonate to form a hard skeleton.A coral "head" is a colony of...

s, certain gemstone
Gemstone
A gemstone or gem is a piece of mineral, which, in cut and polished form, is used to make jewelry or other adornments...

s, and livestock, most prominently thorses and cattle.

Original series

In Dune (1965), Duke Leto Atreides
Leto Atreides I
Duke Leto Atreides I is a fictional character in the Dune universe created by Frank Herbert. He features in the novel Dune by Frank Herbert and in the Prelude to Dune prequel trilogy by Brian Herbert and Kevin J. Anderson....

 leaves Caladan for the desert planet
Desert planet
A desert planet is a single-biome planet on which the climate is mostly desert, with little or no natural precipitation. Desert planets are known to exist; Mars is often considered a prime example. Indeed, many terrestrial planets would be considered desert planets by this definition...

 Arrakis
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 popularly considered one of the greatest science fiction novels of all time, and it is...

 to assume temporary control over the melange-mining operations there. Leto's son Paul Atreides
Paul Atreides
Paul Atreides is a fictional character in the Dune universe created by Frank Herbert. Paul is a prominent character in the first two novels in the series, Dune and Dune Messiah , and returns in Children of Dune . The character is brought back as two different gholas in the Brian Herbert/Kevin J...

 ultimately rises to lead the entire native Fremen
Fremen
The Fremen are a group of people in the fictional Dune universe created by Frank Herbert. First appearing in the 1965 novel Dune, the Fremen inhabit the desert planet Arrakis and are based on the desert-dwelling Bedouin and Kalahari Bushmen. In Herbert's novels, Arrakis is the sole known source...

 population of Arrakis, using his subsequent control of the planet and its supply of the valuable spice melange to depose the Padishah Emperor
Padishah Emperor
Padishah Emperor is the title given to the hereditary rulers of the Old Empire in the science fiction Dune universe created by Frank Herbert.-Original series:...

 of the Known Universe, Shaddam Corrino IV
Shaddam Corrino IV
Shaddam Corrino IV is a fictional character in the Dune universe created by Frank Herbert. He is Padishah Emperor of the known universe in Herbert's 1965 novel Dune. Shaddam's accession to the throne is chronicled in the Prelude to Dune prequel trilogy by Brian Herbert and Kevin J. Anderson.Born...

.

In 1969's Dune Messiah
Dune Messiah
Dune Messiah is a science fiction novel by Frank Herbert, the second in a series of six novels. It was originally serialized in Galaxy magazine in 1969. The American and British editions have different prologues summarizing events in the previous novel...

, Paul rules the universe from Arrakis, and it is noted that Jessica has been granted control of Caladan. After Paul's death, Jessica returns to Arrakis in Children of Dune
Children of Dune
Children of Dune is a 1976 science fiction novel by Frank Herbert, third in a series of six novels set in his Dune universe. Initially selling over 75,000 copies, it became the first hardcover best-seller ever in the science fiction field...

(1976) to assess the state of Paul's empire, which is being ruled by Leto and Jessica's daughter Alia
Alia Atreides
Alia Atreides is a fictional character in the Dune universe created by Frank Herbert. Introduced in the first novel of the series, 1965's Dune, the character was originally killed in Herbert's first version of the manuscript. At the suggestion of Analog magazine editor John Campbell, Herbert kept...

 until Paul's twin children come of age.

Five thousand years later during the events of Heretics of Dune
Heretics of Dune
Heretics of Dune is a 1984 science fiction novel by Frank Herbert, fifth in a series of six novels. It was ranked as the #13 hardcover fiction best seller of 1984 by The New York Times.-Plot introduction:...

(1984), the planet is simply known as Dan.

Legends of Dune

The Legends of Dune
Legends of Dune
Legends of Dune is a prequel trilogy of novels written by Brian Herbert and Kevin J. Anderson, set in Frank Herbert's Dune universe.* Dune: The Butlerian Jihad * Dune: The Machine Crusade * Dune: The Battle of Corrin...

prequel
Prequel
A prequel is a work that supplements a previously completed one, and has an earlier time setting.The widely recognized term was a 20th-century neologism, and a portmanteau from pre- and sequel...

 trilogy
Trilogy
A trilogy is a set of three works of art that are connected, and that can be seen either as a single work or as three individual works. They are commonly found in literature, film, or video games...

 (2002–2004) by Brian Herbert
Brian Herbert
Brian Patrick Herbert is an American author who lives in Washington state. He is the elder son of science fiction author Frank Herbert....

 and Kevin J. Anderson
Kevin J. Anderson
Kevin J. Anderson is an American science fiction author with over forty bestsellers. He has written spin-off novels for Star Wars, StarCraft, Titan A.E., and The X-Files, and with Brian Herbert is the co-author of the Dune prequels...

, set over 10,000 years before the events of Dune, chronicles the struggle between humans and thinking machines
Thinking machines (Dune)
Thinking machines is a collective term for artificial intelligence in the Dune universe created by Frank Herbert. The Butlerian Jihad a human crusade against thinking machines is an epic turning point in the back-story of the Dune universe...

 that would eventually become known as the Butlerian Jihad
Butlerian Jihad
The Butlerian Jihad is an event in the back-story of Frank Herbert's fictional Dune universe. Occurring over 10,000 years before the events chronicled in his 1965 novel Dune, this jihad leads to the outlawing of certain technologies, primarily "thinking machines", a collective term for computers...

. In the series, Vorian Atreides
Vorian Atreides
Vorian Atreides is a fictional character in the Dune universe created by Frank Herbert. The ancestor of Paul Atreides, Vorian is a key character in the Legends of Dune trilogy created by Brian Herbert and Kevin J. Anderson.-Family history:...

, a human trustee of the machines who turns against them, spends time on Caladan and falls in love with a local woman named Leronica Tergiet. Though Vorian continues traveling the universe even after the fall of the machines, his heirs establish the Atreides dynasty there.
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