What is annular solar eclipse?
The name 'annular' is derived from the Latin word for ring, 'annulus.' Annular eclipses are named for their darkest point even if they only last less than a second. An annular solar eclipse happens when the Moon covers the Sun's center, leaving the Sun's visible outer edges to form a “ring of fire” or annulus around the Moon. People in many parts of the world will see a rare solstice annular solar eclipse on the same day as the June solstice. 
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