Neptune

"Huh, Cabal Cruisers keep returning to Neptune's orbital path. I wonder if they are hiding something in its gravity well."

- Crow

Neptune is the eighth planet of the Sol System, with strong winds, glassy dunes, and high pressure at its surface. The ice giant has fourteen moons, including the Hive occupied moon of Nereid, Triton, where the Neomuni established a small radio telescope array and turned it into a listening post, and Thalassa, an asteroidical moon filled with caves and amalgamated hills rich in phosphates and framework silicates.

History
During the Collapse, Humanity established a city on Neptune that was codenamed Nefele Stronghold by Rasputin. There, the Humans aboard the ECHO colony pods that were launched by Soteria survived the Collapse and managed to hide on the planet, eventually developing technology that surpassed that developed during the Golden Age before it, including nanotechnology enhancements that enabled the creation of Cloud Striders.

After Empress Caiatl and the Imperial Cabal arrived in the system, increased Cabal traffic around Neptune's gravity well was detected with an unknown purpose.

Neptune would become a focus of Vanguard attention thanks to the conclusion of Season of Plunder, as Osiris had gained visions of a city hidden upon its surface, gleaned from his time as the puppet of Savathûn. Despite all the searching performed during Season of the Seraph, nothing was detected upon Neptune, until Rasputin divulged the existence of a city, the information kept hidden in a vault in the Cosmodrome.

This city would come to be known as Neomuna. The AI creation of the Ishtar Collective, Soteria, chose an extra-solar site known as M31 to as one of the only safe spaces to send colony ships to prevent the extinction of humanity. As the AI was in the process of being digitally imprisoned by Clovis Bray for disobeying orders, Soteria split off a submind of itself, ensuring the colony ship could continue travelling through space without interference. This ship would eventually be caught in the gravity well of Neptune, crashing onto its surface. The explanation for Neomuna staying hidden on Neptune's surface would be detailed by the Neomuni archivist Quinn Laghari, stating that the erratic magnetic field of Neptune was perfect for hiding a city.

With the advent of Lightfall, Neptune has become the subject of an invasion by the Shadow Legion, seeking to take a paracausal artifact from Neomuna, known as the Veil. This artifact was hidden on Neptune by Savathûn, with the people of Neomuna using its powers to create technology such as the CloudArk. The shimmering city of Neomuna has now become scarred with damage, with an unquantified section of the city demolished by the parking of Calus's flagship, the Typhon Imperator.

Neomuna

 * Ahimsa Park
 * Gilded Precept
 * Typhon Imperator
 * Límíng Harbor
 * Maya's Retreat
 * Radiosonde
 * Thrilladrome
 * Strider's Gate
 * Hall of Heroes
 * Pouka Pond
 * Zephyr Concourse
 * Esi Terminal
 * Hydroponics Delta
 * Irkalla Complex
 * Veil Containment

List of appearances

 * Destiny 2: Forsaken
 * Beyond Light
 * Season of the Chosen
 * Season of Plunder
 * Season of the Seraph
 * Lightfall