Image of an eclipse

Quick Take: Why the Aug. 21 Eclipse is A Big Deal

Get ready for the sun to go dark during the day, but don't grab your shades. UNLV astrophysicist Jason Steffen on being humbled by the universe.

Similar to this solar eclipse from 1999, the Aug. 21 event will be a total eclipse and historically significant as it will be visible to the entire country. (Luc Viatour/Lucnix.be)

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