Extraterrestrial settlement

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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
  • • Moonbase
    • Mars base
• Extraterrestrial underground settlements
• Extraterrestrial submerged settlements
• Extraterrestrial floating settlements

• Human presence in space
• Human outpost
• Transplanetary