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weightlessness
(Encyclopedia)weightlessness, the absence of any observable effects of gravitation. This condition is experienced by an observer when he and his immediate surroundings are allowed to move freely in the local gravit...Gemini space program
(Encyclopedia)Gemini space program: see space exploration. ...Apollo space program
(Encyclopedia)Apollo space program: see space exploration. ...Mariner space program
(Encyclopedia)Mariner space program: see space exploration. ...Mercury space program
(Encyclopedia)Mercury space program: see space exploration. ...European Space Operations Center
(Encyclopedia)European Space Operations Center (ESOC): see European Space Agency. ...European Space Research Institute
(Encyclopedia)European Space Research Institute (ESRIN): see European Space Agency. ...European Space Research Organization
(Encyclopedia)European Space Research Organization (ESRO): see European Space Agency. ...Space Transportation System
(Encyclopedia)Space Transportation System, official designation for the U.S. space shuttle. ...Iran-contra affair
(Encyclopedia)Iran-contra affair, in U.S. history, secret arrangement in the 1980s to provide funds to the Nicaraguan contra rebels from profits gained by selling arms to Iran. The Iran-contra affair was the produc...Browse by Subject
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