Extraterrestrial settlement

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^[1]
• Extraterrestrial surface settlement (incl. extraterrestrial underground settlement)
  • Moonbase
  • Mars base
• Extraterrestrial floating settlement
  • High Altitude Venus Operational Concept (HAVOC)^[2]
• Extraterrestrial submerged settlement