Topline
An annular solar eclipse dubbed the “ring of fire” will sweep through the U.S. and Mexico today, darkening the midday sky in a rare phenomenon leaving a thin ring of light around the moon from Oregon to Texas, and will be the last of its kind in the U.S. until 2039.
Key Facts
The eclipse will be a partial one referred to as an annular eclipse, which occurs when the moon falls in a direct line between the Earth and the Sun, but when the moon is at its farthest point from the Earth, appearing smaller than a total solar eclipse and leaving the iconic ring of fire around its perimeter, according to NASA.
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