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POPSwhy we should...(shouldn't) go to space it started: the creation of a cosmic diaspora is just one argument for putting humans in space- a bad one. But, now, as human-made climate change has thrust us into the role of stewards of the global biosphere, new reasons, good ones, have emerged. Indeed, keeping our space ambitions relatively local--within our own solar system- can help us find solutions for the climate crisis.