Galactic Trade Center

The GTC, as it's called in passing, is the only moon in existance to have
been turned into an artificial structure. The entire world is covered in
city, even underground. On this world, you can find ANYTHING, if you know
where to look. Most of the city is underground, with seals that close up
should the security be comprimized. What's more, the seals look exactly
like the rest of the floor when closed up, so it will take nothing short
of trial and error to find one once they have closed up.

Type: Satellite/Artificial
Temperature: Frigid
Atmosphere: None
Hydrosphere: Dry
Gravity: Standard
Terrain: Urban
Length of Day: 22 standard hours
Length of Year: 36 local days
Sapient Species: All varieties
Starport: Imperial Class
Planet Function: Trade
Population: 500 Million
Government: Democracy
Tech Level: Space