Why a total solar eclipse is such a big deal
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On August 21, 2017, a total solar eclipse is coming to the continental United States for the first time in 38 years, which may make it the most viewed total solar eclipse in history. Vox explains the orbital mechanics of the earth-moon-sun system.
What coincidence makes it so that the moon is able to perfectly cover the sun during a total solar eclipse?
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- Video created by Vox
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