Here are entered works on artificial satellites in general and on the satellites orbiting around Earth. Works on artificial satellites of other celestial bodies are entered under Artificial satellites subdivided by the name of the body, e.g. Artificial satellites--Sun.This heading may be subdivided geographically only by names of celestial bodies. --names of individual artificial satellites
Here are entered works dealing with manned installations existing for specific functions, such as servicing space ships, etc., in orbit around the earth or other natural extraterrestrial bodies. Works dealing with communities established in space or on natural extraterrestrial bodies are entered under Space colonies. Works dealing with manned installations existing for specific functions on natural extraterrestrial bodies are entered under Extraterrestrial bases.
