History 15,211 rep 10 gold badges51 silver badges121 bronze badges
Aviation 15,003 rep 6 gold badges63 silver badges154 bronze badges
Space Exploration 3,832 rep 18 silver badges44 bronze badges
Earth Science 1,921 rep 3 gold badges10 silver badges22 bronze badges
Astronomy 1,562 rep 6 silver badges20 bronze badges

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