First Alert Weather 101: What causes an eclipse?

Earth experiences many different types of eclipses, which are all based on the order of the planet, sun, and moon.
Published: Oct. 1, 2024 at 4:24 PM HST|Updated: Oct. 24, 2024 at 4:55 PM HST
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HONOLULU (HawaiiNewsNow) - Eclipses were a popular topic in 2024, especially considering the total solar eclipse that moved across portions of the continental United States on April 8, 2024.

It all boils down the position of the Sun, Moon, and Earth.
It all boils down the position of the Sun, Moon, and Earth.(HNN Weather)

Earth experiences many different types of eclipses, which are all based on the order of the planet, sun, and moon.

The type of eclipse will change depending on the position of these celestial bodies.
The type of eclipse will change depending on the position of these celestial bodies.(HNN Weather)

The two types of eclipses experienced on Earth can be categorized as solar or lunar. Solar eclipses occur when the moon passes between the sun and Earth, casting a shadow on the planet’s surface.

During a solar eclipse, the moon is casting a shadow on the Earth.
During a solar eclipse, the moon is casting a shadow on the Earth.(HNN Weather)

Total eclipses occur when the moon completely blocks out the sun. Partial eclipses are when only a portion of the star’s light is obscured.

This occurs when the moon is close enough to the earth to completely block to sun's light.
This occurs when the moon is close enough to the earth to completely block to sun's light.(HNN Weather)

However, an annular eclipse occurs whenever the moon isn’t close enough to Earth to block the sun completely.

This leads to the "ring of fire" effect viewed during an annular eclipse.
This leads to the "ring of fire" effect viewed during an annular eclipse.(HNN Weather)

During an annular eclipse, the sun is visible along the outer portions of the moon.

Solar eclipses on Earth are relatively unique. Earth’s moon is relatively unique in that it is both the right size and close enough to the planet to block out light from the sun completely. That does not happen with the moons of other planets.

For example, Mars has two moons, Phobos and Deimos. Their irregular shapes and smaller sizes cause the planet to experience incomplete solar eclipses.

During a solar eclipse, the moon is casting a shadow on the Earth.
During a solar eclipse, the moon is casting a shadow on the Earth.(HNN Weather)

Lunar eclipses, on the other hand, occur when the Earth is between the sun and moon. The Earth’s shadow is then cast on the moon.

Hawaii has another chance to view a partial solar eclipse on Wednesday, Oct. 2, 2024.

An annular eclipse is set to move across the southernmost tip of South America, and the eclipse path will begin over the Pacific.

Hawaii will not see total coverage, but more of the sun will be obscured by the moon than the partial eclipse that occurred here back in April.

Visualization of an eclipse
Visualization of an eclipse(HNN Weather)

The eclipse will begin at 5:45 a.m., which is before sunrise.

The partial eclipse will not be visible until the sun rises at 6:23 a.m.

Maximum coverage of the sun will occur at 6:45 a.m., and approximately 46% of the sun will be obscured in Honolulu.

If you’d like to be able to view the eclipse, make sure you have free visibility to the east as the sun is rising.