It seems strange that astrobiologists would confine their thinking to (a) the limited and limiting environment of planet Earth and (b) the infinite universe. Should we not at least begin to think constructively and creatively about our immediate environment beyond the surface of our planet? We have the ability to park habitable objects in orbit around the Earth, or around the Sun, to provide a possible way for our civilisation to continue and grow without destroying the Earth's ability to sustain us.

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