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secession, in political science

(Encyclopedia)secession, in political science, formal withdrawal from an association by a group discontented with the actions or decisions of that association. The term is generally used to refer to withdrawal from...

teleportation, in science fiction

(Encyclopedia)teleportation, in science fiction, the process of instantaneously transporting a person or an object between two points, usually by disappearing from one place and reappearing at a second place as a p...

Columbia, U.S. space shuttle

(Encyclopedia)Columbia, U.S. space shuttle. On its 28th flight, on Feb. 1, 2003, after completing a 16-day scientific mission, the spacecraft disintegrated during reentry, killing its seven-person crew. About 16 mi...

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 Force, United States

(Encyclopedia)Space Force, United States (USSF), military force that forms a separate service within the U.S. Dept. of the Air Force, est. Dec. 20, 2019, by act of Congress. The head of the Space Force is the Chief...

Space Infrared Telescope Facility

(Encyclopedia)Space Infrared Telescope Facility: see observatory, orbiting. ...

life support system

(Encyclopedia)life support system: see artificial life support; Life Support for Human Spaceflight under space science. ...

Sagan, Carl Edward

(Encyclopedia)Sagan, Carl Edward sāˈgən [key], 1934–96, American astronomer and popularizer of science, b. New York City. Early in his career he investigated radio emissions from Venus and concluded that the c...