A "ring of fire" shines over Easter Island in a spectacular new image of the annular solar eclipse on Oct. 2.
An annular solar eclipse occurs when the moon is at its farthest from Earth, also known as apogee, as it passes between our planet and the sun. At this position, the moon appears smaller in the sky and can't cover the entirety of the sun's disk, causing sunlight to form what is referred to as a "ring of fire" around the moon.
