List of Foundation universe planets
Encyclopedia
This is a list of Foundation universe planets featured or mentioned in the Robot series
Isaac Asimov's Robot Series
Isaac Asimov's Robot Series is a series of short stories and novels by Isaac Asimov featuring positronic robots.- Short stories :Most of Asimov's robot short stories are set in the first age of positronic robotics and space exploration...

, Empire series
Isaac Asimov's Galactic Empire Series
The Galactic Empire Series is a science fiction series containing three novels and one short story by the American author Isaac Asimov...

, and Foundation series created by Isaac Asimov
Isaac Asimov
Isaac Asimov was an American author and professor of biochemistry at Boston University, best known for his works of science fiction and for his popular science books. Asimov was one of the most prolific writers of all time, having written or edited more than 500 books and an estimated 90,000...

.

61 Cygni

The star system 61 Cygni
61 Cygni
61 Cygni,Not to be confused with 16 Cygni, a more distant system containing two G-type stars harboring the gas giant planet 16 Cygni Bb. sometimes called Bessel's Star or Piazzi's Flying Star, is a binary star system in the constellation Cygnus...

, in the Sirius Sector, is advanced by Lord Dorwin as the potential site for a planet of origin for the human species. Lord Dorwin cites 'Sol' and three other planetary systems in the Sirius Sector, along with Arcturus in the Arcturus Sector, as potential original worlds. This fact seems to be contradicted by information given in Foundation and Earth
Foundation and Earth
Foundation and Earth is a Locus Award nominated science fiction novel by Isaac Asimov, the fifth novel of the Foundation series and chronologically the last in the series...

.

Alpha

Alpha is a fictional planet
Planets in science fiction
Planets in science fiction are fictional planets that appear in various media, especially those of the science fiction genre, as story-settings or depicted locations.-History:...

 orbiting the larger of the two stars in the Alpha Centauri
Alpha Centauri
Alpha Centauri is the brightest star in the southern constellation of Centaurus...

 system.

In Asimov's Foundation Series, Alpha Centauri is cited by Lord Dorwin as one of the solar systems where humankind potentially originated. The others are Sol, Sirius
Sirius
Sirius is the brightest star in the night sky. With a visual apparent magnitude of −1.46, it is almost twice as bright as Canopus, the next brightest star. The name "Sirius" is derived from the Ancient Greek: Seirios . The star has the Bayer designation Alpha Canis Majoris...

, 61 Cygni
61 Cygni
61 Cygni,Not to be confused with 16 Cygni, a more distant system containing two G-type stars harboring the gas giant planet 16 Cygni Bb. sometimes called Bessel's Star or Piazzi's Flying Star, is a binary star system in the constellation Cygnus...

 and Arcturus. Beyond mentioning that it is in the Sirius Sector, Dorwin gives no further details.

In a later book, Foundation and Earth
Foundation and Earth
Foundation and Earth is a Locus Award nominated science fiction novel by Isaac Asimov, the fifth novel of the Foundation series and chronologically the last in the series...

, Alpha is a planet orbiting the larger of the two stars in the Alpha Centauri system. Golan Trevize discovers Alpha when he attempts to find the location of Earth by locating the center of a 'best sphere' made from the co-ordinates of the 50 Spacer
Spacer (Asimov)
In Isaac Asimov's Foundation/Empire/Robot series, the Spacers were the first humans to emigrate to space. About a millennium thereafter, they severed political ties with Earth, and embraced low population growth and extreme longevity as a means for a high standard of living, in combination with...

 worlds.

The planet is discovered to be entirely covered by an ocean, with the exception of a single island with a surface area of 15,000 square kilometres. (For comparison, Sicily
Sicily
Sicily is a region of Italy, and is the largest island in the Mediterranean Sea. Along with the surrounding minor islands, it constitutes an autonomous region of Italy, the Regione Autonoma Siciliana Sicily has a rich and unique culture, especially with regard to the arts, music, literature,...

 is just over 25,000 square kilometres.) The inhabitants call it New Earth and live a simple lifestyle. While the inhabitants seem to be warm and welcoming, co-existing peacefully in an egalitarian society, this might be a show designed to put foreign visitors at ease while they were infected with a virus. The only certain facts about New Earth culture are that both women and men are completely shirtless, weather permitting, and the men engage in long sea voyages to fish.

The planet Alpha was apparently terraformed habitable by the old Galactic Empire
Galactic Empire (Asimov)
In Isaac Asimov's Robot/Empire/Foundation series of novels, the Galactic Empire is an empire consisting of millions of planets settled by humans across the whole Milky Way Galaxy. Its symbol is the Spaceship and Sun logo.-Author's creation of the empire:...

 and its only land surface is the small island on which the Alphans live. This can be explained by its history: according to information pieced together by Janov Pelorat
Janov Pelorat
Janov Pelorat is a character in the Foundation Series of books by Isaac Asimov. The two books in which he appears are Foundation's Edge and Foundation and Earth....

, the Galactic Empire, likely under Kandar V, laboured to create land on which the last refugees of Earth could live. Then the funds and interest of the Empire ran out and the plans for continents were scrapped. Alpha was left alone for millennia, with only highly advanced weather control and biotechnology.

Alpha first appears in Foundation and Earth
Foundation and Earth
Foundation and Earth is a Locus Award nominated science fiction novel by Isaac Asimov, the fifth novel of the Foundation series and chronologically the last in the series...

, which confirms a merger between the Spacer
Spacer (Asimov)
In Isaac Asimov's Foundation/Empire/Robot series, the Spacers were the first humans to emigrate to space. About a millennium thereafter, they severed political ties with Earth, and embraced low population growth and extreme longevity as a means for a high standard of living, in combination with...

 and Foundation series. In the Spacer series, the planet Aurora in the Tau Ceti system is the first extrasolar colony, suggesting that Alpha Centauri had no habitable worlds. This fits with the late and expensive settlement of Alpha.

Less easily understood is the belief in the early Foundation era that Alpha Centauri might have been the original solar system; a terraformed planet with a very small land area would not be plausible. However, as Alpha is depicted as being solely aquatic with the exception of its single island, it could feasibly have been a planet whose ice caps had melted, covering what might have originally been a larger landed area. Such would likely have been the reasoning of someone like Lord Dorwin. This could just as easily be explained (as it is in the series itself) by the deterioration in standards of academic research in the late Imperial Era, implying that Lord Dorwin and his ilk were not given to actually going to places and gathering firsthand evidence, but preferred to pore through available archives from which by this stage much was missing. Alpha and Sol were therefore not worlds Dorwin knew by experience, but only by vague report.

Anacreon

Anacreon (also known as Anacreon A II) is a planet near the outer end of the periphery
The Periphery
The Periphery is a fictional location in Isaac Asimov's Foundation Series and refers to the outer rims of the Galactic Empire, including planets such as Anacreon and Santanni. Imperial control is weakest in the periphery, as planet governors there frequently possess their own fleets. Santanni...

 and as part of the Galactic Empire was the capital of Anacreon subprefecture, Anacreon prefecture, and Anacreon province and later the Anacreon Kingdom.

Asperta

Mentioned by Mayor Indbur in Foundation and Empire
Foundation and Empire
Foundation and Empire is a novel written by Isaac Asimov that was published by Gnome Press in 1952. It is the second book published in the Foundation Series, and the fourth in the in-universe chronology...

, as a planet to which the Foundation protested some 'sharp trade practises'.

Aurora

Aurora was the first world settled by the Spacers
Spacer (Asimov)
In Isaac Asimov's Foundation/Empire/Robot series, the Spacers were the first humans to emigrate to space. About a millennium thereafter, they severed political ties with Earth, and embraced low population growth and extreme longevity as a means for a high standard of living, in combination with...

, originally named 'New Earth'; it is located in the Tau Ceti
Tau Ceti
Tau Ceti is a star in the constellation Cetus that is spectrally similar to the Sun, although it has only about 78% of the Sun's mass. At a distance of just under 12 light-years from the Solar System, it is a relatively close star. Tau Ceti is metal-deficient and so is thought to be less likely to...

 system, 3.7 parsec
Parsec
The parsec is a unit of length used in astronomy. It is about 3.26 light-years, or just under 31 trillion kilometres ....

s (12 light-year
Light-year
A light-year, also light year or lightyear is a unit of length, equal to just under 10 trillion kilometres...

s) from Earth.

Bonde

Mentioned by Mayor Indbur in Foundation and Empire
Foundation and Empire
Foundation and Empire is a novel written by Isaac Asimov that was published by Gnome Press in 1952. It is the second book published in the Foundation Series, and the fourth in the in-universe chronology...

, one of the planets in the Foundation.

Cil

Mentioned in Second Foundation
Second Foundation
Second Foundation is the third novel published of the Foundation series by Isaac Asimov, and the fifth in the in-universe chronology. It was first published in 1953 by Gnome Press....

. It lay on the normal trade route between Kalgan and Tazenda.

Cinna

Mentioned in Prelude to Foundation
Prelude to Foundation
Prelude to Foundation is a Locus Award nominated 1988 novel written by Isaac Asimov. It is one of two prequels to the Foundation Series. For the first time, Asimov chronicles the fictional life of Hari Seldon, the man who invented psychohistory and the intellectual hero of the series.-Plot...

. Dors Venabili
Dors Venabili
In Isaac Asimov's Foundation Series, Dors Venabili is a good friend, protector and later wife of Hari Seldon, the primary character of Prelude to Foundation and Forward the Foundation. At face value, Dors is an attractive woman, two years younger than Seldon...

 was supposedly from Cinna. The only known descriptions of Cinna come from Dors, and since she was a robot that most likely had never been to Cinna, they may not be accurate. According to Dors, Cinna is a small, unimportant world, where the amount of cloth in beachwear leaves 'very little to the imagination'.

Comporellon

Comporellon orbits the star that is known today as Epsilon Eridani
Epsilon Eridani
Epsilon Eridani is a star in the southern constellation Eridanus, along a declination 9.46° south of the celestial equator. This allows the star to be viewed from most of the Earth's surface. At a distance of 10.5 light years , it has an apparent magnitude of 3.73...

. The planet was originally known as Baleyworld and later became known as Benbally World. This world is known to be very cold, and to the lower limits of comfort.

Daribow

A former Imperial Prefect in the Anacreon province. It's mentioned in Foundation
Foundation (novel)
Foundation is the first book in Isaac Asimov's Foundation Trilogy . Foundation is a collection of five short stories, which were first published together as a book by Gnome Press in 1951...

by Anselm Haut Rodric as a possible threat to Terminus' independence from the recently formed Kingdoms.

Derowd

A planet mentioned by Dors Venabili
Dors Venabili
In Isaac Asimov's Foundation Series, Dors Venabili is a good friend, protector and later wife of Hari Seldon, the primary character of Prelude to Foundation and Forward the Foundation. At face value, Dors is an attractive woman, two years younger than Seldon...

 in Prelude to Foundation
Prelude to Foundation
Prelude to Foundation is a Locus Award nominated 1988 novel written by Isaac Asimov. It is one of two prequels to the Foundation Series. For the first time, Asimov chronicles the fictional life of Hari Seldon, the man who invented psychohistory and the intellectual hero of the series.-Plot...

. On Derowd, promiscuous sexual activity was permitted without restraint even in public, providing traffic was not blocked. The idea was to allow people to live out all their fantasies, so they would be ready to settle down after marriage
Marriage
Marriage is a social union or legal contract between people that creates kinship. It is an institution in which interpersonal relationships, usually intimate and sexual, are acknowledged in a variety of ways, depending on the culture or subculture in which it is found...

. After marriage, the concept of monogamy
Monogamy
Monogamy /Gr. μονός+γάμος - one+marriage/ a form of marriage in which an individual has only one spouse at any one time. In current usage monogamy often refers to having one sexual partner irrespective of marriage or reproduction...

 was absolute and unbroken. The practise stopped around 11,700 G.E. Many associates of Dr. Venabili believed that this was from pressure by other planets, who lost a great deal of tourist business to Derowd.

Earth

Earth has an alternate future history in the Foundation universe.

Erythro

Erythro is the moon of Megas, a gas giant
Gas giant
A gas giant is a large planet that is not primarily composed of rock or other solid matter. There are four gas giants in the Solar System: Jupiter, Saturn, Uranus, and Neptune...

 in the novel Nemesis.

Euterpe

One of the Spacer
Spacer (Asimov)
In Isaac Asimov's Foundation/Empire/Robot series, the Spacers were the first humans to emigrate to space. About a millennium thereafter, they severed political ties with Earth, and embraced low population growth and extreme longevity as a means for a high standard of living, in combination with...

 worlds. It was a popular tourist destination
Tourist destination
A tourist destination is a city, town, or other area that is dependent to a significant extent on the revenues accruing from tourism. It may contain one or more tourist attractions and possibly some "tourist traps."...

 for the spacers, because of its exceptionally large rainforests. Euterpe has one satellite, 'Gemstone', with a radius of 120 km (74.6 mi). It is named after Euterpe
Euterpe
In Greek mythology, Euterpe + τέρπειν terpein ) was one of the Muses, the daughters of Mnemosyne, fathered by Zeus. Called the "Giver of delight", when later poets assigned roles to each of the Muses, she was the muse of music. In late Classical times she was named muse of lyric poetry and...

, the Muse
Muse
The Muses in Greek mythology, poetry, and literature, are the goddesses who inspire the creation of literature and the arts. They were considered the source of the knowledge, related orally for centuries in the ancient culture, that was contained in poetic lyrics and myths...

 of music.

Florina

In The Currents of Space
The Currents of Space
The Currents of Space is a science fiction novel by the American writer Isaac Asimov. It is the second of three books labeled the Galactic Empire series, though it was the last of the three he wrote...

, Florina is the home of "kyrt," a fiber-producing plant that grows only on Florina, and which is woven into an extremely strong yet beautiful cloth. It is in practical serfdom to the planet Sark.

Fomalhaut

A planet mentioned in the Empire Series whose inhabitants speak an extreme dialect of Galactic Standard Speech. Compare Fomalhaut
Fomalhaut
Fomalhaut is the brightest star in the constellation Piscis Austrinus and one of the brightest stars in the sky. Fomalhaut can be seen low in the southern sky in the northern hemisphere in fall and early winter evenings. Near latitude 50˚N, it sets around the time Sirius rises, and does not...

, a star in the real universe.

Gaia

Gaia is located in the Sayshell Sector, about ten parsecs (32 light-years) from Sayshell. It is featured prominently in Foundation and Earth
Foundation and Earth
Foundation and Earth is a Locus Award nominated science fiction novel by Isaac Asimov, the fifth novel of the Foundation series and chronologically the last in the series...

. It is the origin world of the planetary intelligence known as Gaia.

Gamma Andromeda

Gamma Andromeda is a star system in which a nuclear meltdown occurred in 50 F.E, in Foundation
Foundation (novel)
Foundation is the first book in Isaac Asimov's Foundation Trilogy . Foundation is a collection of five short stories, which were first published together as a book by Gnome Press in 1951...

by Isaac Asimov
Isaac Asimov
Isaac Asimov was an American author and professor of biochemistry at Boston University, best known for his works of science fiction and for his popular science books. Asimov was one of the most prolific writers of all time, having written or edited more than 500 books and an estimated 90,000...

. The meltdown killed several million people and destroyed at least half the planet. It was caused by ill-done repairs and shoddy-made replacement parts done several decades before. Following the incident on Gamma Andromeda V, the Galactic Empire
Galactic Empire (Asimov)
In Isaac Asimov's Robot/Empire/Foundation series of novels, the Galactic Empire is an empire consisting of millions of planets settled by humans across the whole Milky Way Galaxy. Its symbol is the Spaceship and Sun logo.-Author's creation of the empire:...

 considered severely limiting the use of nuclear power.

Getorin

Mentioned in Forward the Foundation
Forward the Foundation
Forward the Foundation is a novel written by Isaac Asimov. It is the second of two prequels to the Foundation Series. It is written in much the same style as the original novel Foundation, a novel composed of chapters with long intervals in between...

. In the book, Hari Seldon
Hari Seldon
Hari Seldon, a fictional character, is the intellectual hero of Isaac Asimov's Foundation Series. In his capacity as mathematics professor at Streeling University on Trantor, he developed psychohistory, allowing him to predict the future in probabilistic terms...

 attempted to convince Yugo Amaryl
Yugo Amaryl
Yugo Amaryl is a fictional character in Isaac Asimov's Foundation series. Amaryl, along with Hari Seldon, worked on psychohistory until his death at age 52....

 to take a break from working on psychohistory
Psychohistory (fictional)
Psychohistory is a fictional science in Isaac Asimov's Foundation universe which combines history, sociology, and mathematical statistics to make general predictions about the future behavior of very large groups of people, such as the Galactic Empire...

 and take a vacation on Getorin, a 'resort planet nearby' (near Trantor
Trantor
Trantor is a fictional planet in Isaac Asimov's Foundation Series and Empire Series of science fiction novels.Trantor was first described in a short story by Asimov appearing in Early Asimov Volume 1. Later Trantor gained prominence when the 1940s Foundation Series first appeared in print . Asimov...

). It was probably part of the pre-Imperial
Galactic Empire (Asimov)
In Isaac Asimov's Robot/Empire/Foundation series of novels, the Galactic Empire is an empire consisting of millions of planets settled by humans across the whole Milky Way Galaxy. Its symbol is the Spaceship and Sun logo.-Author's creation of the empire:...

 Kingdom of Trantor.

Glyptal IV

A planet in the Glyptal System in the Galactic Periphery. The Foundation was attempting to bring it into its religious sphere of influence roughly twenty years before the war with Korell. Limmar Ponyets happened to be on Glyptal IV in time to be sent to Askone to rescue Eskel Gorov. During this mission, Askone began to be brought under the Foundation's influence.

Haven

Mentioned in Foundation and Empire
Foundation and Empire
Foundation and Empire is a novel written by Isaac Asimov that was published by Gnome Press in 1952. It is the second book published in the Foundation Series, and the fourth in the in-universe chronology...

. It was one of the Association of Independent Trading Worlds, quasi-independent from the Foundation. It was the second planet in its star system, a barren world made primarily of uneroded rock formations. Most of the cities were in underground caves. One of these cities, Gleiar city, was the site of an attempted landing by Foundation tax-collectors. Toran Darell, husband of Bayta Darrell, was a native of Haven.

Helicon

Helicon is the name of the home planet of Hari Seldon
Hari Seldon
Hari Seldon, a fictional character, is the intellectual hero of Isaac Asimov's Foundation Series. In his capacity as mathematics professor at Streeling University on Trantor, he developed psychohistory, allowing him to predict the future in probabilistic terms...

, discoverer and developer of psychohistory
Psychohistory (fictional)
Psychohistory is a fictional science in Isaac Asimov's Foundation universe which combines history, sociology, and mathematical statistics to make general predictions about the future behavior of very large groups of people, such as the Galactic Empire...

. Helicon was small in population and not particularly rich in resources, and tended to be bullied by its more powerful neighbours. It was noted for martial arts (called 'Twisting' in the Foundation Universe). Hari Seldon claimed that the best Twisters came from Helicon, although his objectivity is questionable. It may be covered primarily by land, as opposed to sea. Tobacco may be grown there, though the only evidence of this is Seldon's father's supposed occupation, labelled by the Encyclopedia Galactica 'a legend of doubtful validity'. In the seventh century of the tenth millennium of the Galactic Era, a large movement of Heliconians convinced themselves that Helicon was the only inhabited world in the Galaxy, in a manner possibly alluding to the Flat Earth Society
Flat Earth Society
The Flat Earth Society is an organization that seeks to further the belief that the Earth is flat instead of an oblate spheroid. The modern organization was founded by Englishman Samuel Shenton in 1956 and was later led by Charles K...

.

Two indigenous species are known: the lamec, a beast of burden, and the greti, a dangerous animal. The names of these animals are most likely anagrams of camel and tiger, respectively. Further evidence can be inferred from local Helicon saying recited by Seldon: "If you ride a greti, you find you can't get off; for then it will eat you." This saying bears uncanny resemblance to the well-known Chinese proverb "騎虎難下" (He who rides the tiger finds it difficult to dismount).

Apart from Arcturus, it is the only known planet in the Arcturus Sector.

Hesperos

A Spacer
Spacer (Asimov)
In Isaac Asimov's Foundation/Empire/Robot series, the Spacers were the first humans to emigrate to space. About a millennium thereafter, they severed political ties with Earth, and embraced low population growth and extreme longevity as a means for a high standard of living, in combination with...

 planet in Robots and Empire
Robots and Empire
Robots and Empire is science fiction novel written by the American author Isaac Asimov and published by Doubleday Books in 1985. It is part of Asimov's Robot series, consisting of many short stories and novels....

. It was one of the original Spacer worlds, and the one on which Vasilia Aliena awaited the death of her father, Han Fastolfe. It is named after Hesperos, the Greek god associated with the star Venus.

Ifni

Ifni was the site of a battle during the Foundation's war with Kalgan; with the exception of the F.S. Ebling Mis, all ships in the Foundation squadron were destroyed.

Iss

A planet in Foundation and Empire
Foundation and Empire
Foundation and Empire is a novel written by Isaac Asimov that was published by Gnome Press in 1952. It is the second book published in the Foundation Series, and the fourth in the in-universe chronology...

. It was one of the Association of Independent Trading Worlds, which were quasi-independent from the Foundation. Together with Haven and Mnemon, it represented half of the military power of the traders. At the Radole conference, Iss was represented by One Mangin.

Jennisek

The traditional local rival/enemy of Helicon, as described in Prelude to Foundation
Prelude to Foundation
Prelude to Foundation is a Locus Award nominated 1988 novel written by Isaac Asimov. It is one of two prequels to the Foundation Series. For the first time, Asimov chronicles the fictional life of Hari Seldon, the man who invented psychohistory and the intellectual hero of the series.-Plot...

by Hari Seldon.

Kalgan

For most of the history of the Galactic Empire, Kalgan was a semi-tropical resort world, 7000 parsecs from Terminus and about 3000 parsecs from Trantor. Despite the breakdown of the Empire, Kalgan continued its prosperity under the rule of a series of princes.

Kalgan was one of the first planets taken over by the Mule in his string of conquests. After he defeated the Foundation, the Mule made it the capital of his Union of Worlds. After the Mule died, Kalgan was ruled by a series of First Citizens from Han Pritcher to Stettin. The last of these, emboldened by the legacy of the Mule, launched a war against the Foundation. After the war ended in the defeat of Kalgan, the Kalganian Navy was dismantled, and the 27 worlds remaining in the Union were allowed to vote for return to the Union, full independence, or entry into the Foundation union.

Konom

A former Imperial Prefect in the Anacreon province. It's mentioned in Foundation
Foundation (novel)
Foundation is the first book in Isaac Asimov's Foundation Trilogy . Foundation is a collection of five short stories, which were first published together as a book by Gnome Press in 1951...

by Anselm Haut Rodric as a possible threat to Terminus' independence from the recently formed Kingdoms.

Korell

Located after the Whassalian Rift (relative to Terminus), Korell is the capital of the Republic of Korell, a union of worlds.

Libair

Home planet of Dr. Selim Junz in The Currents of Space
The Currents of Space
The Currents of Space is a science fiction novel by the American writer Isaac Asimov. It is the second of three books labeled the Galactic Empire series, though it was the last of the three he wrote...

. Mentioned as a planet with some of the galaxy's darkest-skinned people. The planet evidently takes its name from Liberia
Liberia
Liberia , officially the Republic of Liberia, is a country in West Africa. It is bordered by Sierra Leone on the west, Guinea on the north and Côte d'Ivoire on the east. Liberia's coastline is composed of mostly mangrove forests while the more sparsely populated inland consists of forests that open...

, a country in Africa, which would explain a dark-skinned genetic inheritance. Its people have a dim memory of their ancestors having fled from persecution or defeat in battle, which causes Junz to feel sympathy with the opressed Florinians. This might refer either to Liberia having been founded by freed slaves from America, or to some much later event in galactic history of which Asimov provides no further details.

Livia

Briefly mentioned in Foundation and Earth
Foundation and Earth
Foundation and Earth is a Locus Award nominated science fiction novel by Isaac Asimov, the fifth novel of the Foundation series and chronologically the last in the series...

. It was the home world of the scientist Humbal Yariff, who attempted to find the location of Earth.

Locris

Locris (also spelled Loris) was 20 parsec
Parsec
The parsec is a unit of length used in astronomy. It is about 3.26 light-years, or just under 31 trillion kilometres ....

s (65 light-years) from Terminus, and 800 parsecs (2600 light-years) from Santanni. Locris exported wine, which was noted for excellent quality. Captain Han Pritcher
Han Pritcher
Han Pritcher is a fictional character from Isaac Asimov's Foundation Series. He is an important character in the second part of Foundation and Empire and the first part of Second Foundation.- Fictional history :...

 was a native of Loris. Loris was briefly held by the Empire during the campaigns of Bel Riose
Bel Riose
Bel Riose is a fictional character in Isaac Asimov's Foundation series. He was the last strong General of the Galactic Empire, Commander of the legendary Twentieth Fleet, who eventually came to be known as "the Last of the Imperials", and earned this title well. His tactical genius was compared...

. It is named after Locris
Locris
Locris was a region of ancient Greece, the homeland of the Locrians, made up of three distinct districts.-Locrian tribe:...

, a region of ancient Greece.

Lyonesse

Mentioned by Mayor Indbur in Foundation and Empire
Foundation and Empire
Foundation and Empire is a novel written by Isaac Asimov that was published by Gnome Press in 1952. It is the second book published in the Foundation Series, and the fourth in the in-universe chronology...

, forming a trade agreement with the Foundation. It was conquered by the Mule
Mule (Foundation)
The Mule is a fictional character from Isaac Asimov's Foundation series. One of the greatest conquerors the galaxy has ever seen, he is a mentalic who has the ability to reach into the minds of others and "adjust" their emotions, individually or en masse, using this capability to forcibly enlist...

 in 300 F.E.

Mandress

Mentioned in Foundation's Edge
Foundation's Edge
Foundation's Edge is a science fiction novel by Isaac Asimov, the fourth book in the Foundation Series. It was written more than thirty years after the stories of the original Foundation trilogy, due to years of pressure by fans and editors on Asimov to write another, and, according to Asimov...

. It was in the inner provinces of the old Galactic Empire
Galactic Empire (Asimov)
In Isaac Asimov's Robot/Empire/Foundation series of novels, the Galactic Empire is an empire consisting of millions of planets settled by humans across the whole Milky Way Galaxy. Its symbol is the Spaceship and Sun logo.-Author's creation of the empire:...

, to which Harla Branno served as an ambassador in her earlier years.

Melpomenia

The nineteenth Spacer
Spacer (Asimov)
In Isaac Asimov's Foundation/Empire/Robot series, the Spacers were the first humans to emigrate to space. About a millennium thereafter, they severed political ties with Earth, and embraced low population growth and extreme longevity as a means for a high standard of living, in combination with...

 World settled, mentioned in Foundation and Earth
Foundation and Earth
Foundation and Earth is a Locus Award nominated science fiction novel by Isaac Asimov, the fifth novel of the Foundation series and chronologically the last in the series...

. It contained a large monument called the 'Hall of the Worlds', which contained a large room with the fifty Spacer Worlds listed with co-ordinates on seven columns; Melpomenia was the origin point. Using data from these columns, translated by Janov Pelorat
Janov Pelorat
Janov Pelorat is a character in the Foundation Series of books by Isaac Asimov. The two books in which he appears are Foundation's Edge and Foundation and Earth....

, Golan Trevize was able to construct a sphere, the centre of which would be roughly close to Earth. The planet itself, however, was rendered virtually uninhabitable by a radical climate change; the only life form able to survive it was a carbon-dioxide feeding 'moss'. Golan Trevize had to use his blaster to melt away the alien substance on his ship, and the face plates on his and Pelorat's space suits. Only after bathing the rest of the ship in the UV rays of the sun did he leave the forsaken planet. It is presumably named for Melpomene
Melpomene
Melpomene , initially the Muse of Singing, she then became the Muse of Tragedy, for which she is best known now. Her name was derived from the Greek verb melpô or melpomai meaning "to celebrate with dance and song." She is often represented with a tragic mask and wearing the cothurnus, boots...

, the Muse of Tragedy
Tragedy
Tragedy is a form of art based on human suffering that offers its audience pleasure. While most cultures have developed forms that provoke this paradoxical response, tragedy refers to a specific tradition of drama that has played a unique and important role historically in the self-definition of...

.

Mnemon

Mentioned in Foundation and Empire
Foundation and Empire
Foundation and Empire is a novel written by Isaac Asimov that was published by Gnome Press in 1952. It is the second book published in the Foundation Series, and the fourth in the in-universe chronology...

, one of the members of the Association of Independent Trading Worlds, quasi-independent from the Foundation. Together with Haven and Iss, it represented half of the traders' military capacity. It was represented at the Radole Conference by Ovall Gri. Partway through the conference, Mnemon was attacked by the Mule
Mule (Foundation)
The Mule is a fictional character from Isaac Asimov's Foundation series. One of the greatest conquerors the galaxy has ever seen, he is a mentalic who has the ability to reach into the minds of others and "adjust" their emotions, individually or en masse, using this capability to forcibly enlist...

. Because of the tenacity of the traders, the Mule would not have been successful if he had not had an atomic-field depressor. This event pushed the Traders into war, siding with the Foundation against the Mule.

Mores

Mentioned by Mayor Indbur in Foundation and Empire
Foundation and Empire
Foundation and Empire is a novel written by Isaac Asimov that was published by Gnome Press in 1952. It is the second book published in the Foundation Series, and the fourth in the in-universe chronology...

, it completed a commercial treaty with the Foundation in 300 F.E.

Nebula Kingdoms

The Nebula Kingdoms are a set of planets within or nearby the Horsehead Nebula
Horsehead Nebula
The Horsehead Nebula is a dark nebula in the constellation Orion. The nebula is located just to the south of the star Alnitak, which is farthest east on Orion's Belt, and is part of the much larger Orion Molecular Cloud Complex. The Horsehead Nebula is approximately 1500 light years from Earth...

. They are Lingane, Nephelos, Rhodia, and Tyrann.

Neotrantor

Neotrantor, or 'New Trantor', became the de facto 'capital' of the Empire, after Gilmer sacked Trantor. The planet was originally called Delicass, and rules over only 20 planets. Delicass and its attendant worlds consisted of a 'Planetary Granary' for Trantor herself, which is only 3 Parsecs distant, and whose primary is a bright star in the crowded skies of this province. Politically, it is ruled by a corrupt governor, Jord Commason.

The last mentioned Emperor of the Galaxy, Dagobert IX
Dagobert IX
Emperor Dagobert IX is a fictional character from Isaac Asimov's Foundation and Empire. He is one of the last, if not the last, emperor of the Galactic Empire....

 and his son, the Crown prince, died on this planet. It is stated that the dynasty has lasted for about half a century afterwards.

Neotrantor has a similar significance in the history of the Galactic Empire as Ravenna
Ravenna
Ravenna is the capital city of the Province of Ravenna in the Emilia-Romagna region of Italy and the second largest comune in Italy by land area, although, at , it is little more than half the size of the largest comune, Rome...

 did for the remnant Roman Empire.

Nexon

At 2 parsecs (6.5 light-years) from Solaria, it formed with Solaria the closest pair of Spacer
Spacer (Asimov)
In Isaac Asimov's Foundation/Empire/Robot series, the Spacers were the first humans to emigrate to space. About a millennium thereafter, they severed political ties with Earth, and embraced low population growth and extreme longevity as a means for a high standard of living, in combination with...

 worlds. (Solaria was settled from Nexon.)

Nishaya

Part of the pre-Imperial Kingdom of Trantor
Trantor
Trantor is a fictional planet in Isaac Asimov's Foundation Series and Empire Series of science fiction novels.Trantor was first described in a short story by Asimov appearing in Early Asimov Volume 1. Later Trantor gained prominence when the 1940s Foundation Series first appeared in print . Asimov...

, Nishaya is mentioned in Forward the Foundation
Forward the Foundation
Forward the Foundation is a novel written by Isaac Asimov. It is the second of two prequels to the Foundation Series. It is written in much the same style as the original novel Foundation, a novel composed of chapters with long intervals in between...

. At the end of the Empire it was noted for its goat herding and high-quality cheeses. Laskin Joranum pretended to be from Nishaya during his campaign to overthrow Eto Demerzel
R. Daneel Olivaw
R. Daneel Olivaw is a fictional robot created by Isaac Asimov. The "R" initial in his name stands for "robot," a naming convention in Asimov's future society...

. What gave him away to Hari Seldon was his perfect mastery of the Trantorian dialect; real Nishayans spoke a very different dialect of Galactic Standard.

Orsha II

A system in the Normannic Sector of the Galactic Empire
Galactic Empire (Asimov)
In Isaac Asimov's Robot/Empire/Foundation series of novels, the Galactic Empire is an empire consisting of millions of planets settled by humans across the whole Milky Way Galaxy. Its symbol is the Spaceship and Sun logo.-Author's creation of the empire:...

, mentioned in Foundation
Foundation (novel)
Foundation is the first book in Isaac Asimov's Foundation Trilogy . Foundation is a collection of five short stories, which were first published together as a book by Gnome Press in 1951...

. The inhabited planet is Orsha II, the second planet of the system. The capital of the Normannic Sector was originally Siwenna (20 parsec
Parsec
The parsec is a unit of length used in astronomy. It is about 3.26 light-years, or just under 31 trillion kilometres ....

s, or 65 light-year
Light-year
A light-year, also light year or lightyear is a unit of length, equal to just under 10 trillion kilometres...

s, away), but after the first Siwennian rebellion, it was moved to Orsha II.

Rigel

A planet in the Empire Series. In the first millennium of the Galactic Era, its inhabitants developed a robotic culture. Because this made Rigellians so passive, they were easy prey for the warlord Moray.

Rossem

During the days of the Galactic Empire
Galactic Empire (Asimov)
In Isaac Asimov's Robot/Empire/Foundation series of novels, the Galactic Empire is an empire consisting of millions of planets settled by humans across the whole Milky Way Galaxy. Its symbol is the Spaceship and Sun logo.-Author's creation of the empire:...

, it was used as a political prison, and housed a small naval garrison and an observatory (Second Foundation
Second Foundation
Second Foundation is the third novel published of the Foundation series by Isaac Asimov, and the fifth in the in-universe chronology. It was first published in 1953 by Gnome Press....

, chapter 3). After the fall of the Empire, it was conquered by the "Oligarchy of Tazenda", which levied taxes to be paid in foodstuffs, brought to the village of Gentri where the governor lived. During his search for the Second Foundation, the Mule
Mule (Foundation)
The Mule is a fictional character from Isaac Asimov's Foundation series. One of the greatest conquerors the galaxy has ever seen, he is a mentalic who has the ability to reach into the minds of others and "adjust" their emotions, individually or en masse, using this capability to forcibly enlist...

's soldiers, Bail Channis
Bail Channis
Bail Channis is a fictional character from Isaac Asimov's Foundation Series. He is described as a handsome and popular character, very self-confident and intelligent.- Fictional history :...

 and Han Pritcher
Han Pritcher
Han Pritcher is a fictional character from Isaac Asimov's Foundation Series. He is an important character in the second part of Foundation and Empire and the first part of Second Foundation.- Fictional history :...

, came to Rossem. The Mule, meanwhile, destroyed Tazenda, assuming it was the Second Foundation. He assumed incorrectly, and was defeated by the First Speaker of the Second Foundation.

Rossem was exceptionally cold, and was thus barren with a low population, exclusively in the equatorial regions.

Salinn

The first planet to be aware of the Mule
Mule (Foundation)
The Mule is a fictional character from Isaac Asimov's Foundation series. One of the greatest conquerors the galaxy has ever seen, he is a mentalic who has the ability to reach into the minds of others and "adjust" their emotions, individually or en masse, using this capability to forcibly enlist...

's advance on the Foundation.

Santanni

Santanni is 9000 parsec
Parsec
The parsec is a unit of length used in astronomy. It is about 3.26 light-years, or just under 31 trillion kilometres ....

s (29,000 light-year
Light-year
A light-year, also light year or lightyear is a unit of length, equal to just under 10 trillion kilometres...

s) from Trantor
Trantor
Trantor is a fictional planet in Isaac Asimov's Foundation Series and Empire Series of science fiction novels.Trantor was first described in a short story by Asimov appearing in Early Asimov Volume 1. Later Trantor gained prominence when the 1940s Foundation Series first appeared in print . Asimov...

 and 800 parsec
Parsec
The parsec is a unit of length used in astronomy. It is about 3.26 light-years, or just under 31 trillion kilometres ....

s (2600 light-year
Light-year
A light-year, also light year or lightyear is a unit of length, equal to just under 10 trillion kilometres...

s) from Locris.

In 12,058 G.E. the population of Santanni attempted to rebel against the Galactic Empire
Galactic Empire (Asimov)
In Isaac Asimov's Robot/Empire/Foundation series of novels, the Galactic Empire is an empire consisting of millions of planets settled by humans across the whole Milky Way Galaxy. Its symbol is the Spaceship and Sun logo.-Author's creation of the empire:...

. Raych Seldon
Raych Seldon
Raych Seldon is a fictional character in Isaac Asimov's Foundation Series. Raych is the adopted son of Hari Seldon and Dors Venabili, the primary characters in the first two books of the series...

, son of psychohistorian Hari Seldon
Hari Seldon
Hari Seldon, a fictional character, is the intellectual hero of Isaac Asimov's Foundation Series. In his capacity as mathematics professor at Streeling University on Trantor, he developed psychohistory, allowing him to predict the future in probabilistic terms...

, was killed in the rebellion, valiantly defending the University of Santanni.

After the founding of the Foundation, Santanni traded with it until the trade route was cut off by the rebellion of Anacreon. One thing known to have been made on Santanni was the cigar box possessed by Jord Fara, and later by Salvor Hardin
Salvor Hardin
Salvor Hardin is the first mayor of Terminus, the capital planet of the Foundation in Isaac Asimov's Foundation series, and the main protagonist of the second and third parts of Foundation. He is portrayed as a shrewd and ruthless politician, a master manipulator who acts in the interests of the...

.

It was captured in the early stages of the war with Kalgan. After the death of the Mule
Mule (Foundation)
The Mule is a fictional character from Isaac Asimov's Foundation series. One of the greatest conquerors the galaxy has ever seen, he is a mentalic who has the ability to reach into the minds of others and "adjust" their emotions, individually or en masse, using this capability to forcibly enlist...

, Santanni was instrumental in breaking the siege on Terminus levied by the Mule's successor, Han Pritcher
Han Pritcher
Han Pritcher is a fictional character from Isaac Asimov's Foundation Series. He is an important character in the second part of Foundation and Empire and the first part of Second Foundation.- Fictional history :...

 in 308 F.E.

Sark

In The Currents of Space
The Currents of Space
The Currents of Space is a science fiction novel by the American writer Isaac Asimov. It is the second of three books labeled the Galactic Empire series, though it was the last of the three he wrote...

, Sark rules over Florina and controls the galactic trade of the cloth kyrt.

Sayshell

At the time of the novel Foundation's Edge
Foundation's Edge
Foundation's Edge is a science fiction novel by Isaac Asimov, the fourth book in the Foundation Series. It was written more than thirty years after the stories of the original Foundation trilogy, due to years of pressure by fans and editors on Asimov to write another, and, according to Asimov...

, Sayshell was capital of the 86 worlds in the Sayshell Union.

Sirius

The Sirius system was a capital of the Sirius Sector, and one of the planets advanced by some late Galactic Era archaeologists
Archaeology
Archaeology, or archeology , is the study of human society, primarily through the recovery and analysis of the material culture and environmental data that they have left behind, which includes artifacts, architecture, biofacts and cultural landscapes...

 as the planet of origin for the human species. Between 800–900 G.E., a planet in the Sirius system was one of the ten most populated planets in the Galaxy.

Siwenna

Siwenna was capital of the Normannic Sector of the Galactic Empire
Galactic Empire (Asimov)
In Isaac Asimov's Robot/Empire/Foundation series of novels, the Galactic Empire is an empire consisting of millions of planets settled by humans across the whole Milky Way Galaxy. Its symbol is the Spaceship and Sun logo.-Author's creation of the empire:...

, and once one of its richest planets.

Smyrno

Located in the Anacreon Province, it was one of four prefects in the Anacreon Province that rebelled against the Galactic Empire c.50 F.E. The planet itself is located 50 parsecs (163 light-years) from Terminus. Its name is a parallel with Smyrna
Smyrna
Smyrna was an ancient city located at a central and strategic point on the Aegean coast of Anatolia. Thanks to its advantageous port conditions, its ease of defence and its good inland connections, Smyrna rose to prominence. The ancient city is located at two sites within modern İzmir, Turkey...

, an important city of the Roman Empire in Anatolia
Anatolia
Anatolia is a geographic and historical term denoting the westernmost protrusion of Asia, comprising the majority of the Republic of Turkey...

. Smyrno is hot and dry, the rooms smell of sulphur, and people live underground. Its most famous citizen is Hober Mallow
Hober Mallow
Hober Mallow is a fictional character in Isaac Asimov's Foundation Series. He is the central protagonist of "The Merchant Princes", the final short story of Asimov's Foundation.-Fictional biography:...

, one of the major characters from the Foundation Series.

Solaria

Solaria was the last of the fifty worlds to be colonized by the Spacers
Spacer (Asimov)
In Isaac Asimov's Foundation/Empire/Robot series, the Spacers were the first humans to emigrate to space. About a millennium thereafter, they severed political ties with Earth, and embraced low population growth and extreme longevity as a means for a high standard of living, in combination with...

, settled in approximately 4270 A.D. by inhabitants of the neighboring world Nexon originally for summer homes.

Synnax

The birthplace of Gaal Dornick
Gaal Dornick
Gaal Dornick is a fictional character in Isaac Asimov's Foundation Series. It is Gaal Dornick that introduces the Foundation series, appearing in the first chapter of Foundation, describing his meeting with Hari Seldon. He eventually went on to be his biographer...

, it was in a stellar system orbiting a region called the 'Blue Drift', which is on the Trailing Arm of the Galaxy. Travel to Trantor is expensive, thanks to its relative position to the Galactic black hole. In this way it is similar to Hari Seldon's home world of Helicon. Synnax's system contains an asteroid field, as well as a set of gas giant
Gas giant
A gas giant is a large planet that is not primarily composed of rock or other solid matter. There are four gas giants in the Solar System: Jupiter, Saturn, Uranus, and Neptune...

s.

Tazenda

Tazenda is an oligarchy
Oligarchy
Oligarchy is a form of power structure in which power effectively rests with an elite class distinguished by royalty, wealth, family ties, commercial, and/or military legitimacy...

 of 27 planets which stayed out of interstellar politics. It was considered by The Mule
Mule (Foundation)
The Mule is a fictional character from Isaac Asimov's Foundation series. One of the greatest conquerors the galaxy has ever seen, he is a mentalic who has the ability to reach into the minds of others and "adjust" their emotions, individually or en masse, using this capability to forcibly enlist...

 to be the home of the Second Foundation because of its location 120 radial degrees from Terminus, its location in a constellation visible from Trantor
Trantor
Trantor is a fictional planet in Isaac Asimov's Foundation Series and Empire Series of science fiction novels.Trantor was first described in a short story by Asimov appearing in Early Asimov Volume 1. Later Trantor gained prominence when the 1940s Foundation Series first appeared in print . Asimov...

 (giving it the name "Star's End"), and its name sounding similar to "Star's End." It was attacked and destroyed by the Mule in 315 F.E. It was not, in fact, the location of the Second Foundation.

Terel

One of the Association of Independent Trading Worlds. Had a minor victory against the Mule
Mule (Foundation)
The Mule is a fictional character from Isaac Asimov's Foundation series. One of the greatest conquerors the galaxy has ever seen, he is a mentalic who has the ability to reach into the minds of others and "adjust" their emotions, individually or en masse, using this capability to forcibly enlist...

.

Terminus

Terminus is the sole planet orbiting an isolated star
Star
A star is a massive, luminous sphere of plasma held together by gravity. At the end of its lifetime, a star can also contain a proportion of degenerate matter. The nearest star to Earth is the Sun, which is the source of most of the energy on Earth...

. The capital of Terminus is Terminus City, home of Cyclopedia Square.

Trantor

Trantor is in the center of the habitable part of the galaxy.

Vega

It was capital of the Vega Province in the Galactic Empire
Galactic Empire (Asimov)
In Isaac Asimov's Robot/Empire/Foundation series of novels, the Galactic Empire is an empire consisting of millions of planets settled by humans across the whole Milky Way Galaxy. Its symbol is the Spaceship and Sun logo.-Author's creation of the empire:...

, one of the wealthiest provinces in the entire Galaxy. Until the revolt of the Anacreon Prefect, it traded with Terminus, capital of the Foundation. One of the known quantities it exported was tobacco
Tobacco
Tobacco is an agricultural product processed from the leaves of plants in the genus Nicotiana. It can be consumed, used as a pesticide and, in the form of nicotine tartrate, used in some medicines...

, of notably high quality.

Vincetori

Mentioned in Second Foundation
Second Foundation
Second Foundation is the third novel published of the Foundation series by Isaac Asimov, and the fifth in the in-universe chronology. It was first published in 1953 by Gnome Press....

. It lay on the standard trade route between Kalgan and Tazenda.

Voreg

A planet in the Anacreon Prefect, close to the capital system Anacreon.

Wanda

The temporary headquarters for the navy of Bel Riose
Bel Riose
Bel Riose is a fictional character in Isaac Asimov's Foundation series. He was the last strong General of the Galactic Empire, Commander of the legendary Twentieth Fleet, who eventually came to be known as "the Last of the Imperials", and earned this title well. His tactical genius was compared...

, General of the Galactic Empire
Galactic Empire (Asimov)
In Isaac Asimov's Robot/Empire/Foundation series of novels, the Galactic Empire is an empire consisting of millions of planets settled by humans across the whole Milky Way Galaxy. Its symbol is the Spaceship and Sun logo.-Author's creation of the empire:...

, during the war between the Empire and the Foundation. Ducem Barr and Lathan Devers were kept in a prison on Wanda during this war, and Devers' ship was impounded there also.

Wencory

Home planet of Las Zenow (12008–?????), chief librarian of the Library of Trantor
Library of Trantor
The Library of Trantor was one of the prominent features of the fictional planet Trantor, created by Isaac Asimov and appearing in his Empire Series and the Foundation Series...

. Zenow returned to Wencory when he retired. (Mentioned in Forward the Foundation
Forward the Foundation
Forward the Foundation is a novel written by Isaac Asimov. It is the second of two prequels to the Foundation Series. It is written in much the same style as the original novel Foundation, a novel composed of chapters with long intervals in between...

).

Zoranel

A planet considered as an exile place for 50 members of the Second Foundation (including Pelleas Anthor) at the end of Second Foundation
Second Foundation
Second Foundation is the third novel published of the Foundation series by Isaac Asimov, and the fifth in the in-universe chronology. It was first published in 1953 by Gnome Press....

, in 378 F.E.
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