An early source of helium-3, Luna is now mined for materials used in space habitat construction. Two dozen major stations have been constructed at Earth's L4 and L5 Lagrange points, all from lunar resources.
The song associated with the rachni can be heard here.
Trivia[]
The presence of the CCCP Luna 23 probe allows the operational zone to be established as the southern portion of Mare Crisium.
In the novel Mass Effect: Revelation, it is stated that Luna was "terraformed". It would not be possible for Luna to gravitationally retain an Earth-like atmosphere for a geological timescale, due to its low mass. However, the issue was clarified by the game's developers; several of the moon's craters were "domed over", allowing localized terraforming of the surface.
Earth from the MoonWhen looking at Earth from the surface of Luna, a reversed image of North America (Mexico, U.S. West Coast) can be seen. This has since been updated in the Legendary Edition to a normal image.
A prevalent in-game wind can be heard, even though Luna's atmosphere is negligible.