InternationalPen2072

InternationalPen2072 t1_j0fyit2 wrote

The limitations of space habitats are size. O’Neil cylinders are relatively easy to manufacture while also allowing comfortable living space, but they do not provide enough space for near total self-sufficient self-regulating ecosystems. McKendree cylinders are big enough to be pretty self-regulating, but they are so massive they would cost an insane amount while being inefficient like planets. If we want to recreate Earth in any meaningful way, it would have to be big. Mars is already big, and so I think terraforming it is valuable, along with Venus while we are at it :) Orbital habitats should 100% be pursued too though; the Moon can’t be terraformed meaningfully, so maybe we should mine it for habitats first.

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InternationalPen2072 t1_j0fvzej wrote

Maximizing living space isn’t the end all be all of settling our Solar System. Ngl, it’s pretty big! Settling Mars, and especially terraforming it, would be extremely mind-boggling expensive, but it would be much cheaper than creating an equal amount of living area with O’Neill cylinders. Would this relegate the supermajority of Mars’ mass to generating a gravity well and nothing else? Yes. Does this really matter? I don’t think so. Unless we have a pressing need or desire to grow our population to quadrillions, I think it would be a little overkill to literally dismantle the entire freaking planet lmao. Personally, I value self-sustaining and ecologically balanced living spaces more, and I feel like the humanity that comes out the other end of the climate crisis would too. A terraformed or para-terraformed Mars would be large enough to be self-sustaining like this with plenty of room for expansion.

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