GOX
Original archive entry. The text, images and links below are kept as they were written.
Gaseous oxygen is used as an oxidizer in thrusters for orbital maneuvering and orientation. It can be shared from the environmental control system in manned spacecraft; or as a productive use of the liquid oxygen in a main engine, which may be slowly boiling off over time in an extended mission.
Freezing Point: -219 deg C. Boiling Point: -183 deg C.