David Hammen
Space Exploration 54,612 rep 5 gold badges129 silver badges215 bronze badges
Physics 38,321 rep 8 gold badges72 silver badges122 bronze badges
Stack Overflow 30,855 rep 8 gold badges55 silver badges98 bronze badges
Astronomy 24,007 rep 2 gold badges45 silver badges94 bronze badges
Earth Science 18,816 rep 1 gold badge47 silver badges89 bronze badges

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