A space habitat (or habitation module) in a basic sense is any facility providing shelter and fulfilling habitational purposes in outer space. It is not to be confused with an extended space settlement, an arrangement of or infrastructure for multiple habitation facilities, in the sense of a space settlement. Space stations and theoretical extraterrestrial surface stations (or base station), such as a moonbase or Mars habitat, include or are basic space habitats.

The International Space Station was planned to get a now-canceled dedicated Habitation Module.

Space tourism is driving the development of dedicated habitats in space. Axiom Station will be a commercial space station with dedicated habitat modules for the purpose of tourism and commercial research.

In particular, inflatable space habitats have been in development for decades. Based on the earlier NASA TransHab design, inflatable habitats have been developed and tested in orbit by the now inactive company Bigelow Aerospace.

Definition The International Astronautical Federation has differentiated space habitats to space settlements and space infrastructure the following way:

Extraterrestrial surface habitat

The only extraterrestrial surface habitats that sofar have been erected were the temporary Apollo Lunar Modules, such as Eagle of Tranquility Base, the very first.

See also Bioastronautics Controlled ecological life-support system Closed ecological system Earth systems engineering and management Human analog missions Human presence in space Life support system List of Mars analogs Mars analog habitat Mars habitability analogue environments on Earth Planetary surface construction Space architecture Space infrastructure Terrestrial analogue sites Underground construction Underwater habitat

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