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Venus is close too but not quite tidally locked. Even if you could solve the considerable other problems, a planet with a day/night cycle nearly 6 months long i
by XorNot 4y ago
Venus is close too but not quite tidally locked. Even if you could solve the considerable other problems, a planet with a day/night cycle nearly 6 months long isn't usable anywhere except the poles, and "spinning up" a planet is an absolutely enormous challenge compared to building a biosphere.
- drran 4y agoIt's possible to live on floating platforms, because O2 is lighter than CO2. By capturing of sunlight (or strong winds), platform can generate a lot of energy to split CO2 into O2 and carbon, to keep platform flying forever, even with moderate leaks.