Baily’s Beads

bright glowing "beads" at the edge of the Moon as the Moon nearly completely covers the Sun
The Bailey's Beads effect is seen as the moon makes its final move over the sun during the total solar eclipse on Monday, August 21, 2017 above Madras, Oregon. A total solar eclipse swept across a narrow portion of the contiguous United States from Lincoln Beach, Oregon to Charleston, South Carolina. A partial solar eclipse was visible across the entire North American continent along with parts of South America, Africa, and Europe.
NASA/Aubrey Gemignani
October 5, 2017
CreditNASA/Aubrey Gemignani
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The Baily's Beads effect is seen as the Moon makes its final move over the Sun during the total solar eclipse on Aug. 21, 2017 above Madras, Oregon. This effect occurs when gaps in the Moon's rugged terrain allows sunlight to pass through in some places just before the total phase of the eclipse.