If we look at moon & mars colonization—radiation is a large risk, earth’s magnetic field means we don’t need to care about solar radiation so much, but there’s no reason that’s permanent, Mars also used to have a magnetic field. I think there’s something to be said for physical isolation, the more physical material you can put between yourself and other environments the smaller the chance that bad stuff get’s through your barrier and get’s to you.
Cost effective is another interesting question—if the cost of subterranean building decreases rapidly, it may be the most cost effective solution—certainly on paper it will probably cost less than space colonization as the materials are readily available along with an advanced value chain of goods and services.
If we look at moon & mars colonization—radiation is a large risk, earth’s magnetic field means we don’t need to care about solar radiation so much, but there’s no reason that’s permanent, Mars also used to have a magnetic field. I think there’s something to be said for physical isolation, the more physical material you can put between yourself and other environments the smaller the chance that bad stuff get’s through your barrier and get’s to you.
Cost effective is another interesting question—if the cost of subterranean building decreases rapidly, it may be the most cost effective solution—certainly on paper it will probably cost less than space colonization as the materials are readily available along with an advanced value chain of goods and services.