The larger work of terraforming requires an initial phase of global warming to release atmosphere from the regolith and to create a water cycle. Nascent industry would begin using indigenous resources: the manufacture of plastics, ceramics and glass. During and after this initial phase of habitat construction, hard-plastic radiation- and abrasion-resistant geodesic domes could be deployed on the surface for eventual habitation and crop growth. Large mall like structures buried in regolith, pressurized habitats would be the first step toward human settlement the book suggests they can be built as Roman-style atria on the surface and then be buried with regolith, with easily produced Martian brick. As initial explorers leave hab-structures on the planet, subsequent missions become easier to undertake. He envisions a series of regular Martian missions with the ultimate goal of colonization, which he details in the seventh through ninth chapters. Chapters 1 and 4 deal primarily with Mars Direct.įor Robert Zubrin, the attractiveness of Mars Direct does not rest on a single cost-effective mission. The Case for Mars is, according to Zubrin, a comprehensive condensation for laymen of many years' work and research. The Mars Direct plan was originally detailed by Zubrin and David Baker in 1990.
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