publication date: Tuesday, March 15, 2016 (part of Spring 2016)

category: Science

clue: He mapped the southern constellations, put a window in a diving bell, and computed the orbit of a comet that still visits us every three quarters of a century.

difficulty: medium

solved by: Russ Wilhelm, Steve West, Samir Mehta, Justin Woods, LaVonne Lemler, Chris Lemler, Joanna Woods, Matthew Preston, and Mike Rothstein


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