From Smithsonian Magazine's Surprising Science blog:
The October 3, 2005 annular eclipse, as seen from Spain. Photo by Abel Pardo López
On Sunday evening, for the first time in 18 years,
a solar eclipse will be visible from the continental United States.
This won’t be your typical eclipse, either—as in the picture above, from
October 3, 2005, the moon will cross directly in front of the sun but
block out only a portion of its light, leaving a “ring of fire” that is
much thicker than the ring seen during most total eclipses...MORE