| These are the overlapping 6 inch disks used to mark the eclipse progress. |
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| Click on the photo for a larger image |
| These are the overlapping 6 inch disks used to mark the eclipse progress. |
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| Click on the photo for a larger image |
Location: The Space Museum, Bonne Terre, MO
Date: August 21, 2017
Photographer: Courtesy of Al Cikas
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