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A structure equipped to support a human crew and designed to remain in space for an extended period and serve as a base for research, repair of satellites, or other space-related activities. All space stations built to date orbit around Earth.
(Astronautics) any large manned artificial satellite designed to orbit the earth during a long period of time thus providing a base for scientific and medical research in space and a construction site, launch pad, and docking arrangements for spacecraft. Also called: space platform or space laboratory
a manned spacecraft or satellite orbiting the earth for an extended period of time, used for assembling and serving other spacecraft, for observation and research, etc.