Description: [edan-image:id=siris_sic_14760,size=200,left] On July 1, 2016, the current National Air and Space Museum (NASM) building, covered with a Tenessee pink marble façade and recessed glass bays, celebrated its 40th anniversary. For this, NASM reopened its central exhibition, the Boeing Milestones of Flight Hall, and hosted various events including greetings from Mars and from
Description: It can be so frustrating to put great effort into something, and then to have your work and achievements called into question. I can't begin to imagine how frustrated Samuel Pierpont Langley was in 1903. By that time, he had spent over forty years studying astrophysics and aerodynamics. His work on astronomically-derived time measurement in the late 1860's is the heart of the
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