@futurebird I honestly don't see them as a possibility in our lifetimes. I wish they were. And not entirely insulated from Earth and a dedicated infrastructure. The thing that will take longer, I think, is sorting out the socio-economic side, as well as the environmental impact (on Earth) of moving the required amount of stuff to (at least) orbit.
https://mastodon.online/@bovaz/113605440532717524
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