Feasibility of artificial space habitats

Feb 17, 2021
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In Legend of Galactic Heroes, a self-sustained space habitat was built: it is a sphere object in which inhabitants lived
inside the sphere.
It produced its own food supplies and manufactured goods.
Gundam series included space colonies.
How feasible and practical are artificial space colonies?
 
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"How feasible and practical are artificial space colonies?"

In my opinion, they re feasible and practical but a lot of work is going to be needed. Of course, it is not difficult to have a colony like an overgrown space station relying on Earth for support.
The difficulty is the self-sustaining colony. One reads all sorts of glib remarks like splitting water to provide hydrogen for fuel and oxygen to breathe. These seem to ignore the energy required to do this, and rely on ignoring the Laws of Thermodynamics.

Cat :)
 

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