Selene

Selene (sometimes known as Moon) is the moon of Earth. It is tidally locked to its planet, and has almost no atmosphere.

History
In 1969, human astronauts Neil Armstrong and Buzz Aldrin became the first humans to set foot on a celestial body other than Earth. This officially marked the moment humanity had entered the early space faring age.

In 1987, Earth became under siege by the Harbingers. Fortunately, Dhragolon and Eteno ships assisted the militaries from across Earth to do so, by setting up outposts on Selene.

Today, Selene is a quiet backwater, used an auxillary source of helium-3 by Eteno colonists.