Where were you on Aug. 21, 2017? On this day last summer, millions of Americans flocked to a 70-mile-wide (113 kilometers) path that stretched across the U.S. from Oregon to South Carolina to watch as the moon's shadow momentarily turned day into night.
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By BY RAYMOND ZHONG from NYT Technology https://ift.tt/2ZVzHzt
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The blood-red color of the moon during a total lunar eclipse may be difficult to explain without a basic understanding of orbital mechanics,...
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NSF's 10 Big Ideas Since 2017, NSF has been building a foundation for the Big Ideas through pioneering research and pilot activities....
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