Luna

Luna or informally called the Moon is a large natural satellite which orbits Earth.

Structure
Luna is a barren, rocky world with no water or any other features which could harbor life. Its atmosphere is small and rarefied, and the surface temperature rises to 390 K (117oC) and lowers down to 70 K (-203oC). However, there is a number of cities on the moon which are protected by glass domes. The glass domes modify the temperatures so that it is breathable and humans can survive.

History
For over four billion years Luna just orbited Earth. In the 20th century, Humans begun sending robotic spaceprobes to the moon and eventually, a whole landing team to explore it in 1969. They managed to land and set foot on July 20 of that year.

As time passed, and as gradually more was learned about Luna, it became the goal of both NASA and ESA, the Earth's top space agencies to actually build a lunar base. This was achieved on September 27, 2024 and was declared a colony of not any country on Earth, but rather the UN.

More and more Lunar bases begun popping up around the original one, especially when artificial gravity was invented on May 27, 2273. After World War III, Luna became a more popular place to visit, since travel at light-speed could occur there in an instant (just over a second).

The inhabitants of Luna wanted themselves to become independent from the UN, and they did so just before the UFHW was formed. The current population is 102 million (a ninety-something enviroscore).