Millions of people will soon travel to a narrow strip in America to witness a rare event: a total solar eclipse. On 21 August, many will look up to the sky to witness this phenomenon – will you be one of them? In the following shortened excerpt from "Totality: The Great American Eclipses of 2017 and 2024," learn what types of eyewear you should be using to watch the Sun disappear, when you can do away with eye protection completely, and other ways to best view this event.
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