HackingTheUniverse

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Commerce in space will be driven by the demands of exchange and the economic factors involved.
Raw Materials:
Air and water are likely to be in high demand and even if they become somewhat abundant, will always remain treasured for their inherent importance. Food will be mostly manufactured locally, assuming you have the raw [...]

Life support systems in space involve a range of areas and considerations.

Short term issues:

Hull protection - compression, extreme temperature control, and extreme radiation protection are usually provided by some kind of hull in either a spacecraft or a larger living habitat structure
Short term breathable oxygen supply - a tank of air and a delivery mechanism
Short [...]