Apollo 11 at 50: Lessons from humanity’s greatest engineering feat

Anniversary celebration shines a spotlight on the moon mission's systems, models and connections

By Barrett S. Caldwell

"What are you doing this summer?" During late May on the Purdue campus and at many other research universities, this is a common greeting among faculty. Normally, it is a question addressing general hopes and promises of unstructured time, chances to return to long-neglected projects and perhaps time for rest and recovery. However, my answer was very focused with a mission countdown clock updating on a nearly constant basis.

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