Planets and moons

This is a list of planets in the Borderlands universe that have been mentioned or referenced, but never visited directly.

Aquator
Aquator is a planet shown only in tourism posters spread across Pandora in Borderlands, with a single known appearance in Borderlands 2. The poster depicts some small islands on one giant ocean covering its surface. Its main functions are tourism and providing water for other planets. The name "Aquator" is likely a play on the words "aqua" and "Equator".

Artemis
Artemis is Mordecai's planet of origin. Artemis was the goddess of the hunt in Greek mythology, a fact that references Mordecai's role as the Hunter class.

Athenas
Athenas is Maya's planet of origin. According to ECHO Recorders obtained by Angel, the planet is ruled by a monastic order known as the Order of the Impending Storm. When Maya was left with the Order as an infant, the monks raised her and used her reputation as a Siren to scare the populace into obeying them for 27 years. When Brother Sophis, a leading monk of the Order and Maya's caretaker, attempted to force Maya to execute several 'criminals,' she realized the Order's deceit and killed Sophis, then left the planet to seek out her Siren heritage on Pandora. This presumably ended the Order's reign.

Demophon, Tantalus and Thrace
Demophon, Tantalus and Thrace are briefly mentioned in Axton's personal ECHO log by his wife, Sarah. Presumably, Axton's reckless nature compromised each of his missions there.

Dionysus
Dionysus is Lilith's planet of origin. In Greek mythology, Dionysus was the god of wine, ritual madness and celebration, a fact that possibly alludes to Lilith's fun-loving, slightly unstable personality.

Eden-5
Eden-5 is implied to be Gaige's planet of origin. It is likely in the same star system as Eden-6, and is mentioned by Gaige as having a corrupt police force.

Eden-6
Eden-6 is a planet first mentioned by Marcus during Claptrap's New Robot Revolution, before the fight against the MINAC. Marcus offered to take the Vault hunters off-planet after "dispatching that runty little shit," but was shot (non-fatally) in the back by the Interplanetary Ninja Assassin Claptrap before being able to tell the Vault Hunters of its story.

Eden-6 is referenced twice in Borderlands 2, first in a Hyperion radio commercial, where Handsome Jack claims to have rescued the Space Vixens of Eden-6 using Hyperion weapons, and again by Jack's Body Double, mentioning that he had had sex with the aforementioned Space Vixens.

Eunomia
Eunomia is Captain Scarlett's planet of origin. This is somewhat ironic for the cheerfully treacherous pirate, as Eunomia was the goddess of law and legislation in Greek mythology.

Hephaestus
Hephaestus is Mr. Torgue's planet of origin. Hephaestus was the god of fire, invention and smithing in Greek mythology, which is indirectly referenced by Torgue's inventive streak and love of explosions.

Hera
Hera is Wilhelm's planet of origin. Krieg is also stated to have visited Hera at one point, where he attacked an unnamed fugitive.

Hestias
Hestias is briefly mentioned in Axton's personal ECHO log by his wife, Sarah. According to her, Axton was assigned to protect a dignitary there. Instead, he used the dignitary to lure out the enemy, track them to their base, and kill them, at the cost of the official's life.

Hermes
Hermes is Sir Hammerlock's planet of origin. It has a thin atmosphere that is rich in helium, and orbits around a blue giant star.

Hieronymous
Hieronymous is Axton's planet of origin. Its name is most likely a reference to Rob Heironimus, one of the founders of Gearbox Software.

Isolus
Isolus is the planet T.K. Baha and his family lived on before moving to Pandora. The Bahas fled Isolus and its solar system by Mr. Blake's suggestion, after he informed T.K. that the Hyperion Corporation intended to steal his wave rifle designs, and that assassins were being sent to kill his family.

Menoetius
Menoetius is Brick's planet of origin. Menoetius was a Titan in Greek mythology characterized by his extreme strength, undying pride and boiling rage, all of which are among Brick's most prominent traits.

Promethea
Promethea is a prominent planet in the Borderlands universe, referenced frequently throughout the series. Several sources state that Promethea is where the Atlas corporation found alien technology and reverse-engineered it in order to manufacture improved starships and weaponry. The Crimson Lance retain a military presence on the planet, and it has been stated by General Knoxx that Roland served two tours there.

It is a well-known fact on Pandora that Promethean living conditions are harsh - even worse than those facing Pandoran settlers. An Atlas propaganda message at T-Bone Junction states "...at least you're not on Promethea!" when referring to the positive side of Pandora. In Borderlands 2, citizens of Sanctuary and the Morningstar sniper rifle occasionally comment along the same lines.

In Greek mythology, Prometheus was a Titan who sided with the gods during the Titanomachy. After the war, he stole fire from Olympus and presented it as a gift to mankind, allowing them to grow. Prometheus was harshly punished by the gods for his transgression, and Pandora was then created through Zeus' will. She was given many gifts by the gods, such as intelligence, kindness, and curiosity, and was wed to Prometheus' brother, Epimetheus, as a final act of vengeance. Epimetheus gave Pandora a jar containing all the evils of the world as a wedding gift, with instructions to never open it. However, her curiosity eventually caused her to release them upon the earth. The only spirit left within the jar was Elpis, the spirit of hope.

Promethea shares its fate of suffering with its namesake, and the advanced technology the Atlas corporation acquired from it can be symbolically seen as Prometheus' gift of fire, whereas the existence and contents of the Vaults can be seen as metaphors for Pandora's box.

Themis
Themis is the planet where Axton's wife Sarah and her platoon are stationed. Themis was the goddess of divine law and order in Greek mythology. This may reflect Sarah's by-the-book personality, in contrast to Axton's more chaotic one.