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[She's trying to following the terms he's using, but Miranda is far from a scientist or even an astronomer. The overall point of his words make sense, though.]
So the systems with the best...planets to use are in the center? Does that include the Earth? Is it...is it still there?
[She's seen enough barely livable areas now, and versions of Earth where no humans are left. She wonders if his home is like that.]