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Overview

Luna is Earth's Moon and one of the most politically significant locations in The Expanse universe. In the centuries since humanity expanded into the solar system, Luna grew from a scientific outpost into a sprawling center of governance, diplomacy, and naval construction. Its largest settlement, Lovell City, functions as the effective capital of the United Nations and houses the New Hague government complex. Luna's low gravity, roughly one-sixth of Earth's, makes it a practical meeting ground for diplomats from Earth, Mars, and the Belt, since visitors from any faction can move comfortably on its surface.

In The Expanse: Osiris Reborn, Luna is a visitable social hub where players navigate political intrigue, bureaucratic maneuvering, and factional diplomacy. The game's official account has described Luna as "the most valuable political hub of the solar system," and the Steam store page lists it alongside Mars as one of the "imperious political bastions" players will visit between missions.

Key Facts

Lovell City

Lovell City is Luna's largest settlement and its de facto capital. The city is built primarily underground, spreading outward from the primary lunar spaceport into a network of tunnels, chambers, and excavated caverns. Very little of the city is visible from the surface. Inside, artificial skies are projected onto the ceilings of its vast caverns to simulate daylight, giving the underground metropolis a sense of openness that belies its subterranean construction.

The city contains warehouses, commercial centers, office complexes, convention centers, hotels, residential areas, and schools. Short-range travel within the city is handled by pedicabs that carry passengers through the tunnels, while mass transit tube stations connect the more distant districts. The architecture is polished compared to Belt stations, with wide promenades and government buildings that reflect Earth's wealth and political influence.

The city may be named after James A. Lovell Jr., the astronaut who commanded the Apollo 13 mission, which famously lost its service module en route to the Moon and had to return to Earth without landing.

Aldrin Docks and the Spaceport

Lovell City's spaceport is one of the most distinctive in the solar system. Its docks were excavated directly out of the lunar surface, creating enclosed bays large enough to house entire ships. Aldrin Docks, named in the tradition of lunar exploration history, serve as the main point of entry for visitors arriving by ship. Tugs guide vessels in and out of the docks, managing the flow of traffic in the low-gravity environment. The spaceport handles both civilian and military traffic, connecting Luna to the broader solar system.

New Hague

New Hague is a district within Lovell City that houses the United Nations complex on Luna. The complex includes administrative offices, courtrooms, and government facilities. It exists to provide availability for officials and citizens who are unwilling or unable to travel to the main UN headquarters in New York City on Earth. During the events of The Expanse, New Hague grows in importance as political situations make Earth itself less stable.

The Outer Planets Command and the Outer Planets Governing Board are both based on Luna's surface, making Lovell City the primary administrative center for UN operations beyond Earth. This concentration of governmental authority is one of the reasons Luna holds such strategic value.

Political Role

Luna is the diplomatic crossroads of the solar system. Its low gravity makes face-to-face meetings practical for representatives from all three major factions: Earthers accustomed to 1g find the lighter gravity comfortable, Martians from 0.38g feel at ease, and Belters, who often struggle under full Earth gravity, can move without discomfort on Luna. This physical accessibility has made Luna the preferred neutral ground for cross-faction negotiations.

The inhabitants of Luna are full United Nations citizens, and the moon's population of roughly 100 million people participates in UN governance. Luna's political identity is closely tied to Earth's, but the moon has its own local concerns and perspectives shaped by the realities of life at one-sixth gravity.

Military Significance

Luna is a critical military asset for the United Nations Navy (UNN). The Bush Naval Shipyards, located in Luna's orbital space, are responsible for building a significant portion of the UNN's warships. The shipyards produce destroyers, light cruisers, and the powerful Truman-class dreadnoughts that form the backbone of Earth's fleet. A separate civilian division, the Bush Orbital Shipyards, builds passenger shuttles, transport ships, yachts, and racing vessels.

Luna Base serves as a training facility for UN marines, who use the low-gravity environment to prepare for operations in vacuum and reduced gravity conditions. The UNN Home Fleet is also commanded from Luna, with flag officers maintaining their headquarters on the moon's surface. This combination of shipbuilding capacity, training infrastructure, and fleet command makes Luna one of the most heavily defended locations in the inner solar system.

Relationship to Earth

Luna and Earth share a tight political and economic bond. The Earth-Luna run is one of the busiest transit routes in the solar system, with shuttles carrying passengers, cargo, and government officials between the two bodies on a constant schedule. Luna's economy depends on this connection: it receives supplies and immigrants from Earth while providing shipbuilding services, government facilities, and a lower-gravity alternative for Earthers seeking relief from 1g living.

Despite their close relationship, Luna is not simply an extension of Earth. The moon's residents have developed their own identity over generations. Living at one-sixth gravity produces subtle physical differences over time, and the enclosed underground environment of Lovell City creates a distinct urban culture. Lunarians view themselves as part of the inner planets but not identical to Earthers, a nuance that surfaces in political discussions and social interactions.

Role in The Expanse: Osiris Reborn

In The Expanse: Osiris Reborn, Luna is one of several major social hubs that players can visit between missions. The game's Steam store description refers to "the imperious political bastions of Mars and Luna" as destinations alongside Ceres Station, the gardens of Ganymede, and bunker complexes in the Asteroid Belt.

Unlike the teeming slums of Ceres or the military strongholds of Mars, Luna is presented as a center of political gameplay. Concept art revealed in early 2026 hinted at political intrigue and bureaucracy as gameplay elements specific to this location. The implication is that Lovell City is not primarily a combat zone but a place where the player navigates UN politics through dialogue, skill checks, and factional maneuvering. The choices and consequences system tracks how the player interacts with UN officials, diplomats, and other political figures encountered on Luna.

The city's architecture is described as more polished than Belt stations, with wide promenades and government buildings that stand in sharp contrast to the cramped, industrial corridors of Eros Station or the dark tunnels of Ceres. Players visiting Luna will find gear shops, NPC interactions, and companion downtime activities, as with every major hub location.

The player's origin and factional alignment likely influence how Luna's inhabitants respond. An Earther player character may receive a warmer reception in the corridors of New Hague, while Belters and Martians could face subtle resistance or outright suspicion from UN loyalists.

Trivia

The official game account posted concept art of Luna alongside the statement: "Luna is a key territory for the UN. Not only are UNN ships built here, but Luna's low gravity makes it possible for diplomats from different factions to meet face to face, making Luna the most valuable political hub of the solar system."

In the game's Location Summary table on the Locations page, Lovell City on Luna is categorized as an "Underground metropolis" with "artificial skies, UN capital, political gameplay" as its notable features.