Star Command is a peacekeeping organization of the Galactic Alliance. Its headquarters are located on a space station orbiting what seems to be planet Earth. The Space station is commanded by Commander Nebula.
It is also the workplace of Space Rangers like Buzz Lightyear, whose main duty is to protect the galaxy from criminals of all sorts, including the evil Emperor Zurg, sworn enemy of the Galactic Alliance.
For other Space stations orbiting over the Earth see the following.