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 general works on the scientific, technological, and engineering disciplines needed for the exploration of outer space. Works on the physics and technical details of locomotion beyond earth's atmosphere are entered under Space flight. General and technical works on manned space travel are entered under Manned space flight. Works giving accounts of events and experiences during specific manned space flights are entered under Space flights. General works on travel to the planets or to the stars are entered under Interplanetary voyages or Interstellar travel.