Yeah, other than the fact that Biosphere II completely failed to be self sustaining, then sure, it resembles what a space colony might look like. And you are a

Yeah, other than the fact that Biosphere II completely failed to be self sustaining, then sure, it resembles what a space colony might look like. And you are assuming there are no resource constraints on the sizes of those domes; Biosphere II was made by shipping machinery and raw materials across modest distances by truck, as opposed to shipping supplies from Earth by rocket. I remember reading about Biosphere II in Omni magazine, in the late '70s. We still cannot create a self-sufficient sealed ecosystem here on Earth, 45 years later.