Global One is a space station orbiting Earth, commanded by Captain Ridley O'Bannon and operated by a large crew. It is at least 1000 feet long and is partially run by solar power.
The colour theme is blue and white, and it is equipped with maneuvering thrusters that can move the station in the event of an emergency. It is assumed that the station takes a geostationary orbit above earth (more specifically South America).
It appears in Impact, when Langstrom Fischler's rocket changes a comet's trajectory to crash into it and Earth. Fortunately, John is able to use Thunderbird 5 to pull it out of the way in time, after Ridley refuses to abandon it, claiming she and her station were 'a package deal' and says "Save me, save my station".