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Eclipses have been aiding scientists throughout history, from helping measure the width of the Atlantic ocean and verifying Einstein's theory of general relativity, to allowing NASA to attempt a thermal mapping of Mercury. Subscribe for regular science videos: http://bit.ly/RiSubscRibe For the first time in nearly 100 years, a total solar eclipse will be visible across the entire contiguous United States. Professor Frank Close, particle physicist, former Christmas Lecturer and eclipse enthusiast ta

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