 They propose a two-step plan: 1) build a self-contained environment capable of sustaining an atmosphere on Earth, and 2) build a self-contained space lab in orbit around the Earth to mine or extract the needed minerals, water from the Moon, and solar energy from the Sun. The space lab will become the Aeronauts' interim refuge if they have to leave Earth suddenly.
Haya suggests converting the series of tunnels and caves into an underground colony, just as her people do in building their homes in the ground. They can create an underground water irrigation system to tap into uncontaminated water wells below the ground.
Fuerte suggests creating a greenhouse enclosed in a dome for growing plants for food and grazing for animals. Korpun suggests that they build shafts to move above and below the surface, and for microgravity training.
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