On Saturday, October 14, 2023, a rare annular solar eclipse, also known as a “ring of fire” eclipse, will be visible in North America, Central America, and parts of South America.
Contents
During an annular solar eclipse, the Moon appears slightly smaller than the Sun, creating a ring-like effect as it passes in front of the Sun. The path of annularity, where the ring of fire will be visible, is approximately 118 to 137 miles (190 to 220 kilometers) wide.
Annular vs total eclipse
Here are the key differences between an annular eclipse and a total eclipse:
- Coverage of the Sun: In a total solar eclipse, the Moon completely covers the Sun, resulting in a temporary darkness known as totality. In contrast, during an annular eclipse, the Moon obscures all but an outer ring of the Sun, creating a “ring of fire” effect.
- Moon’s apparent size: The difference in the Moon’s apparent size in the sky is the primary factor that determines the type of eclipse. During a total eclipse, the Moon’s apparent size is slightly larger than the Sun’s, allowing it to cover the Sun entirely. In an annular eclipse, the Moon’s apparent size is slightly smaller than the Sun’s, resulting in a ring of light remaining visible.
- Alignment and distance: The alignment and distance between the Sun, Earth, and Moon also play a role in determining the type of eclipse. A total eclipse occurs when the Sun, Moon, and Earth are perfectly aligned, and the Moon’s shadow fully covers the Sun’s disk. An annular eclipse happens when the alignment is perfect, but the Moon’s apparent size is slightly smaller than the Sun’s, creating a light ring.
- Path and duration: Both total and annular eclipses have a narrow path on Earth with a short duration, often less than 10 minutes. The path of totality in a total eclipse and the path of annularity in an annular eclipse can vary in width and length, depending on the specific alignment and distance of the celestial bodies.
2024 solar and lunar events
- January 3: Perihelion. The Earth will be at its closest point to the Sun in its orbit.
- February 9: Supermoon (New Moon)
- February 24: Micromoon (Full Moon)
- March 10: Supermoon (New Moon)
- March 20: March Equinox. This event marks the beginning of spring in the Northern Hemisphere and is characterized by equal hours of day and night
- March 25: Micromoon (Full Moon) and Penumbral Lunar Eclipse. A penumbral lunar eclipse is a celestial event that occurs when the Moon passes through the faint, outer part of Earth’s shadow, known as the penumbra
- April 8: Supermoon (New Moon)
- April 8: Total solar eclipse. This eclipse can be an awe-inspiring celestial event that drastically changes the appearance of the Sun and Moon
- July 5: Aphelion. The Earth will be at its farthest point from the Sun in its orbit
- September 18: Supermoon (Full Moon)
- September 18: Penumbral Lunar Eclipse. A penumbral lunar eclipse occurs when the Moon passes through the faint, outer part of Earth’s shadow, known as the penumbra.
- October 2: Micromoon (New Moon) and Annular Solar Eclipse.
- October 17: Supermoon (Full Moon)
- November 15: Supermoon (Full Moon)
Where can it be seen
- Path of visibility : The path of annularity begins over the Pacific Ocean, makes landfall in Oregon, and then arches from Oregon to Texas. After that, it continues south through Central America to Brazil
- Duration: The whole event will take about three hours, but the annularity, the maximum point of the eclipse, will only last about five minutes. The closer you are to the center of the path of annularity, the longer the annularity will last
- Visibility: Only within the path of annularity will the ring of fire be visible. The rest of the region will experience a partial solar eclipse of varying obscuration
- Livestream: If you can’t make it to the path of annularity, you can watch the livestream of the eclipse online
- Safety: Proper eye protection is essential when viewing any solar eclipse, including annular eclipses. Be sure to use certified solar viewing glasses or other safe viewing methods to protect your eyes
ALSO READ: India launches highly anticipated sun mission
The science behind it
During an annular solar eclipse, the Moon passes between the Sun and Earth while it is at its farthest point from Earth, creating a unique celestial event
- Distance and size: The distance between the Sun, Earth, and Moon plays a crucial role in determining the type of eclipse. When the Moon is at or near its greatest distance from Earth, and the Sun is nearest to Earth, the Moon appears smaller than the Sun in the sky. As a result, during an annular eclipse, the Moon does not completely cover the Sun’s disk, and a ring of light remains visible in the sky
- Path of annularity: The path of annularity, where the ring of fire is visible, is approximately 118 to 137 miles (190 to 220 kilometers) wide. This path is determined by the alignment of the Sun, Moon, and Earth, with the Moon’s smaller apparent size causing the ring-like effect.
- Hybrid eclipses: In some cases, an eclipse can be a hybrid, also known as an annular/total eclipse. These rare events shift between a total and annular eclipse, appearing as total at certain points on Earth’s surface and annular at others.
- Safety: Proper eye protection is essential when viewing any solar eclipse, including annular eclipses. Be sure to use certified solar viewing glasses or other safe viewing methods to protect your eyes.
