David Hammen
  • Member for 7 years, 1 month
  • Last seen this week
  • Houston, TX
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Space Exploration 56,081 rep 5 gold badges131 silver badges218 bronze badges
Physics 38,657 rep 8 gold badges73 silver badges122 bronze badges
Stack Overflow 31,065 rep 8 gold badges56 silver badges99 bronze badges
Astronomy 25,205 rep 2 gold badges51 silver badges97 bronze badges
Earth Science 19,196 rep 1 gold badge47 silver badges91 bronze badges

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474 down 374 answer