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by sandworm101 1248 days ago
It wouldn't need to be all that big. Park something out beyond geostationary orbit where it can sit ready to go on a few days notice. It doesn't need to be complex. A GoPro atop of a bathtub of xenon, with some big solar panels, would have the necessary deltaV. Slapping an srb on it for the initial oberth kick away from earth should speed it up too.