The total solar eclipse being called the “Great American Eclipse” will pass through 14 states from Oregon to South Carolina on August 21. Though eclipses are not rare per se, it’s uncommon for a total solar eclipse to sweep across the third most populous country in the world.

The mainland United States has not experienced such a celestial event since 1979. The rarity of these events means many of us may not be aware of the potential dangers. Fortunately, NASA and other experts are here to help.

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Watching an eclipse can be a mesmerizing, unforgettable event, but it can

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