On Aug. 21, the moon will block out the sun completely, as seen from the United States, following a narrow band across the country while the shadow of the moon moves from the west coast to the east. The total solar eclipse will the first across the entirety of the contiguous United States since June 8, 1918 — almost 100 years ago.

Understandably, there is much excitement around the astronomical event, with viewing parties already being planned in various places along the eclipse’s path, which starts in Oregon and ends in South Carolina. If you plan to watch the eclipse too, either by traveling to a place from where it is visible in its entirety, or by remaining where you are to see a partial

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