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Inflatable Biospheres for the New Frontier

19 Oct 2016, 03:25 UTC
Inflatable Biospheres for the New Frontier NASA
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X-Ray of a notional regolith shielded 16 meter in diameter biosphere (Credit: NASA)by Marcel F. Williams At least 0.1 g is required for unaided human traction when walking on a low gravity world. And some studies suggest that some individuals may have difficulty-- non-visually-- perceiving up and down under a gravity that is less than 1.5 g. There are also some questions as to whether rigorous exercise will be enough to prevent human bones from losing significant amounts of calcium under low gravity environments that could cause bone fractures-- especially when returning to Earth.Planets and Moons within the solar system that are potentially suitable for human colonization: Moonsurface gravity relative to the Earth: 0.17gdiameter relative to the Earth: 27.3%surface area relative to the Earth: 7.4%Marssurface gravity relative to the Earth: 0.38g diameter relative to the Earth: 53.1%surface area relative to the Earth: 28.4%Mercurysurface gravity relative to the Earth: 0.38g diameter relative to the Earth: 38.3%surface area relative to the Earth: 14.7%Callisto surface gravity relative to the Earth: 0.13g diameter relative to the Earth: 37.8%surface area relative to the Earth: 14.3%Note: Land area comprises ~ 29% of the Earth's surface with ~71% covered by waterBut even if future human colonist can ...

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