Space Colonization
Permanent homes beyond Earth.
Space colonization refers to the establishment of permanent, self-sustaining human settlements beyond Earth, utilizing extraterrestrial resources and advanced technologies for long-term survival and expansion into the cosmos.
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Center["Space Colonization"]:::main
Pre_orbital_mechanics["orbital-mechanics"]:::pre --> Center
click Pre_orbital_mechanics "/terms/orbital-mechanics"
Pre_closed_loop_life_support["closed-loop-life-support"]:::pre --> Center
click Pre_closed_loop_life_support "/terms/closed-loop-life-support"
Pre_off_world_resource_extraction["off-world-resource-extraction"]:::pre --> Center
click Pre_off_world_resource_extraction "/terms/off-world-resource-extraction"
Rel_terraforming["terraforming"]:::related -.-> Center
click Rel_terraforming "/terms/terraforming"
Rel_interstellar_travel_physics["interstellar-travel-physics"]:::related -.-> Center
click Rel_interstellar_travel_physics "/terms/interstellar-travel-physics"
Rel_kardashev_scale["kardashev-scale"]:::related -.-> Center
click Rel_kardashev_scale "/terms/kardashev-scale"
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🧒 Explique-moi comme si j'avais 5 ans
🏘️ Building permanent cities on other planets or inside giant spinning tubes in space where people live their whole lives.
🤓 Expert Deep Dive
The feasibility of space colonization hinges on achieving true self-sufficiency, moving beyond Earth-dependent supply chains. ISRU is paramount; for Mars, this includes extracting water ice for life support and propellant (via electrolysis into H2 and O2), and potentially utilizing atmospheric CO2. Radiation shielding is a critical design constraint, necessitating subsurface habitats, thick regolith layers, or advanced materials. Closed-[loop life support](/fr/terms/closed-loop-life-support) systems must achieve near-perfect recycling efficiency (>99%) to minimize resupply mass. Artificial gravity, potentially through rotating structures, is a major consideration for long-term health, though its implementation adds significant complexity and mass. The choice of location (e.g., lunar poles for water ice, Martian lava tubes for natural shielding) involves complex trade-offs between resource availability, environmental hazards, and accessibility. Ethical considerations regarding planetary protection and potential extraterrestrial life are also integral.