On August 21, 2017, the Earth will cross the shadow of the moon, creating a total solar eclipse. Eclipses happen about every six months, but this one is special. For the first time in almost 40 years, the path of the moon's shadow passes through the continental United States. via NASA http://www.nasa.gov/image-feature/visualization-of-the-august-21-2017-total-solar-eclipse
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