#space_station__spacestation__space_platform__spaceplatform__space_laboratory__spacelaboratory  a manned artificial satellite in a fixed orbit designed for scientific research
  supertype:  artificial_satellite__satellite  man-made equipment that orbits around the earth or the moon
  subtype:  Salyut  either of two Soviet space stations launched in the 1970s
  subtype:  Skylab  United States space station; in orbit from 1973 to 1979

No statement uses or specializes space_station; click here to add one.