Triton

Of Neptune’s moons, Triton is the largest, and the only moon in the solar system with a retrograde orbit. Due to this orbit and a composition that is comparable to Pluto’s, scientists believe that the moon may have been a dwarf planet from the Kuiper Belt, captured in Neptune’s orbit. The mass of ice on its surface and below ground can produce both water and oxygen—one advantage the moon does have. Tectonic activity on the moon, with nitrogen gas geysers, makes work directly on the surface perilous, but underground habitats in stable tectonic areas are thought to be safe.
Only a hardy and motley band of astronomers and prospectors live on Triton—the furthest any human has ever lived from Earth. The deep astronomy labs are responsible for charting into the unexplored reaches of the galaxy, while the prospectors are exploring mining possibilities on Neptune’s moons.
During the Protogen incidents, the labs were occupied by a handful of prospectors sympathetic to the OPA, who turned the array in-system and broadcasted the location of every Martian ship in the system along with high-definition images of the surface of Mars, down to the topless sunbathers in the dome parks. Though Mars was not impressed and threats were made, they saved their nukes for Phoebe. The astronomers regained the lab, and most of the prospectors went on to mine another day.

Type

Planetoid / Moon

Location under

Neptunian System