"See You in the Shadow"

Depending on when you read this, the Great American Eclipse will either be about to happen or will have happened. This incredibly rare event - the last cross-country total solar eclipse occurred in 1918 - is an amazing opportunity for the entire nation to celebrate and witness one of nature's most intriguing spectacles.

Along the path of totality, skywatchers will be treated to a rare celestial combination: the disk of the moon completely covering the face of the sun, blocking its light and allowing the corona, its tenuous but fiery atmosphere, to get its chance to shine.

Outside totality it's not too shabby either. Everyone in the continental US gets at least 65% coverage, with the worst spots in the northeast and along the Mexican border. Hundreds of millions of people will get to look up at the sky - safely! - and simply enjoy the show.