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Space Exploration 21,848 rep 6 gold badges68 silver badges136 bronze badges
Retrocomputing 4,426 rep 4 gold badges17 silver badges46 bronze badges
Science Fiction & Fantasy 2,065 rep 1 gold badge6 silver badges26 bronze badges
Worldbuilding 1,533 rep 1 gold badge5 silver badges20 bronze badges
Physics 522 rep 1 gold badge3 silver badges11 bronze badges

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