FIRST AIRED: June 21, 2017

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00:00:00
>> Skywatchers across the US are in for a treat. On August 21st, for the first time in almost a century, a total solar eclipse will reach across the country, plunging the strip, 70 miles wide, into darkness. NASA's Dr. Nicholeeen Viall says she's excited.>> What's super cool is for two minutes, all of a sudden in the middle of the day, it goes dark like it's a moonlit night.
00:00:24
>> Weather permitting, the moon silhouette will be visible as it passes across the country from Lincoln Beach, Oregon, to McClellanville, South Carolina. And for those wearing safety glasses or using a pinhole camera, the sun's outer atmosphere known as the corona will be on full display.>> The solar corona is very hot, millions of degrees, many orders of magnitude hotter than the surface below it, the surface of the sun.
00:00:48
That's really weird. That'd be like, if you walked away from a fireplace and it kept getting hotter. So we wanna understand why that is.>> A potentially hot day for science and a cool experience for everyone else.