On Tuesday, October 25, 2022, just six days before Halloween, the moon will pass in front of the sun, creating a partial solar eclipse. The sun will appear as if a huge mouthful has been taken from it depending on where viewers are located around the world.
The partial eclipse will be visible over the Northern Hemisphere in Africa, Asia, Europe and Guernsey in the UK and will be most extreme at the North Pole and Russia.
Unfortunately, this part solar eclipse October 25 will not be visible in the United States
Related: Guide to Solar Eclipses 2022: When, Where and How to See Them
Between about 5 a.m. and 9 a.m. EDT (0900-1300 GMT), about 82% of the solar disk will be obscured by the moonat the maximum of the event — known as the central eclipse point.
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During this particular eclipse nowhere on Earth will experience a total solar eclipse. This is because during the October 25 eclipse, the moon and the sun will not be perfectly aligned and therefore the moon will not completely cover the sun. Instead, the sun will appear to take on a crescent shape, almost as if a bite had been taken out of it.
Eclipses occur when the moon passes between the Earth and the sun and casts a shadow over part of the planet totally or partially blocking sunlight. Solar eclipses are never visible on the whole planet because the moon is much smaller than the Earth and its shadow is only a few hundred kilometers wide.
The central eclipse point where any eclipse is at its maximum is the point on Earth where an imaginary line connecting the centers of the sun and moon meets the surface of our planet. Observers from this point see the moon directly centered on the middle of the sun.
This point is however not fixed during an eclipse. As the moon continues in its orbit, its shadow sweeps across the planet at between 1,000 and 5,000 miles per hour, carrying the central eclipse point with it.
During a total eclipse, the central eclipse point moves across the Earth’s surface from west to east. During a partial eclipse, such as the one at the end of October, this point passes either above the north pole or below the south pole and does not cross the Earth’s surface.
This means that only the edge of the moon’s shadow falls on Earth, explaining why the sun does not completely eclipse.
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On October 25, the central eclipse point will pass over the north pole where 82% of the sun will be eclipsed. Since Russia up to 80% of the sun will be eclipsed, this proportion drops to 70% in China, 63% in Norway, and 62% in Finland.
NEVER look at the sun with binoculars, a telescope or your naked eye without special protection. Astrophotographers and astronomers use special filters to safely observe the sun during solar eclipses or other solar phenomena. Here is our guide to observing the sun safely.
Ordinary sunglasses are not enough to use while observing the sun. Observers hoping to view the eclipse should use sunglasses or eclipse goggles. If these are not available, another method of indirect viewing, such as using a pinhole projector to project sunlight onto a surface.
Looking to photograph the partial solar eclipse? Our How to Photograph a Solar Eclipse explains what it takes to capture one of nature’s most spectacular sights.