Space habitat (facility)
A space habitat (or habitation module) in a basic sense is any facility fulfilling habitational purposes in outer space. It is not to be confused with an extended space habitat, an arrangement of or infrastructure for multiple habitation facilities, in the sense of a space settlement. Space stations or theoretical extraterrestrial stations, such as a Moonbase or Mars habitat, include or are basic space habitats. The ISS was planned to get a now canceled dedicated Habitation module. Space tourism is expected to place dedicated habitats into space. The Axiom Orbital Segment will be a commercial habitation extension  of the ISS for purposes such as tourism, but also commercial research. Particularly inflatable space habitats have been in development. Based on the earlier NASA TransHab design, inflatable habitats have been developed and tested in orbit by the now inactive company Bigelow Aerospace. Extraterrestrial surface habitation. 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.