Space Station
"A space station is an artificial structure placed in orbit and having the pressurized enclosure, power, supplies, and environmental systems necessary to support human habitation for extended periods." (Encyclopædia Britannica, Inc., 2011)
Sources
"Space Station". Encyclopædia Britannica, Encyclopædia Britannica, Inc. Last modified January 30, 2019.
https://www.britannica.com/technology/space-station.
Accessed February 12, 2019.