On October 14, 2023 an annular solar eclipse was visible in the U.S. Much of the United States witnessed a partial solar eclipse as a result but those in the western portion of the country were better situated for a deeper and longer solar eclipse. Those along the narrow path of annularity were treated to an amazing “ring of fire.”
Unlike a total solar eclipse, annular solar eclipses occur when the Moon is slightly farther away from the Earth in its orbit.
This results in the Moon covering up the Sun but since it’s father away a thin ring of the Sun is still visible around the Moon. Thus solar filters must be used during the entire progression of an annular eclipse even when viewing in the path of annularity as the surface of the Sun is still visible round the outer edge of the Moon.