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3D-printed Mars habitat could be a perfect fit for early SpaceX Starship colonies



Space Architecture Launch AI SpaceFactory is the second-best place in the latest phase of a NASA-led competition, pitting several teams against each other in pursuit of designing a 3D-printed Mars habitat and physically demonstrating some of the technologies needed to build them.

MARSHA lends itself impeccably well to SpaceX's goal of developing a sustainable human presence on Mars, with a focus on ease of scalable 3D-printing and residents' quality of life, as well as the use of modular imported goods like windows and airlocks. as fast, safely, and affordably as possible with the support of its Starship / Super Heavy launch vehicle.

As well as developing a custom 3D-printing material using the in-situ Martian resources and demonstrating the technology by successfully printing a 1200 gallon (4500 L) water tank, SpaceFactory's habitat design – known as MARSHA – combines a unique level of pragmatism, functionality, and aesthetic elegance. After analyzing different structural options, the SpaceFactory team settled on a cocoon-like cylinder, taking advantage of the many benefits of the Martian environment while controlling its several downsides. Most notably, Martian gravity is roughly 38% of Earth's, while the small planet's atmosphere is typically 80-150 times less dense at surface-level. As a consequence, the forces exerted by Martian winds are minuscule and can be effectively ignored, while the low gravity dramatically minimizes the architectural challenges that arise from Earthbound structures having to battle their own weight.

Equally important, all Marsian habitats will need to without being pressurized to a level comfortable for long-term colonists, requiring that they be able to survive significant internal pressurization. The Martian radiation environment is also significantly less forgiving than Earth, although the Martian radiation hazards are dramatically overblown. The material of choice of SpaceFactory designed to 3D-print its MARSHA habitat – a bioremediation of plastic (PLA) reinforced with locally-sourced basalt fiber – also accounts for many of Mars's shortcomings, as plastics happen to be some of the best materials for radiation shielding per unit of mass. Featuring a duo of PLA shells placing a meter or more of plastic between living areas, MARSHA would allow relatively acceptable radiation levels, while avoiding the downsides of locating habitats underground or buried them under several meters of Martian regolith.

Thanks to its cylindrical design and SpaceFactory's attention to the quality of life for astronauts residing within it, MARSHA is also exceptionally beautiful and more than a little alluring even from the perspective of Earthly habitation. MARSHA's thoughtful design and polished aesthetic would probably mesh well with SpaceX CEO Elon Musk's own established preferences, known (sometimes infamously so) for a predilection toward building things that value form at least as much as function. Due to the relatively compact nature of the hardware needed (in theory) to begin building MARSHA and the apparent potential for autonomous construction, the SpaceFactory's design also aligns with a number of key aspects of SpaceX's outlined Mars colonization architecture.