Extraterrestrial settlement can be any type of permanent habitation outside of Earth, beyond its space boundary, such as: Space settlement Orbital space station Cycler Interstellar ark Generation ship Extraterrestrial surface settlement (incl. extraterrestrial underground settlement) Moonbase Mars base Extraterrestrial floating settlement High Altitude Venus Operational Concept (HAVOC) Extraterrestrial submerged settlement
See also Human presence in space Human outpost
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