Partial solar eclipse to be visible in some parts of the US this summer
Some lucky stargazers in the United States will have an opportunity to catch a glimpse of the next solar eclipse, according to astronomy experts.
On Aug. 12, a partial solar eclipse will be visible from some parts of the U.S., from Alaska to North Carolina, according to NASA. Most of Canada, much of Europe and northwestern Africa will also be able to see the partial eclipse, according to NASA.
Those in the U.S. and southern Canada will only see a small "bite" taken out of the solar disk as the moon clips the sun, NASA said.
But the full show -- a total solar eclipse -- will pass over the Arctic Ocean, Greenland, Iceland, Atlantic Ocean, Portugal and northern Spain, according to the National Solar Observatory.
A sunset eclipse will even be visible for viewers along the western part of the eclipse path, from mainland Europe to Africa, according to NASA. A sunset solar eclipse occurs when the sun is setting while still partially eclipsed.
After Aug. 12, the next total solar eclipse will be visible on Aug. 2, 2027, in southern Spain and North Africa.
The difference between a total and partial solar eclipse
A total solar eclipse occurs when the moon slips in front of the sun. Viewers located in the center of the moon's shadow then experience a total solar eclipse, according to NASA. The moment of totality is when the moon completely covers the sun.
A partial solar eclipse occurs when watchers are inside the moon's shadow but outside the path of totality, according to NASA.
When the solar eclipse will occur
In the U.S., the maximum of the partial solar eclipse will occur in Anchorage at 8:21 a.m. local time but midday on the mainland. The maximum will occur in Bangor, Maine, at 1:53 p.m.; in Boston at 1:55 p.m.; in Detroit at 1:36 p.m.; in New York City at 1:54 p.m.; and in Philadelphia and Washington, D.C., at 1:53 p.m., according to NASA.
The total solar eclipse will occur at midday in a small, remote region of northern Russia. From Greenland to Iceland, totality will occur from late afternoon to early evening.
In Spain and northwestern Portugal, the sun will be fully eclipsed during the late evening, shortly before sunset, according to NASA. A sunset solar eclipse is a "rare spectacle," according to Space.com.
How to watch the eclipse safely
Anyone who plans to watch the partial solar eclipse will need safe solar viewing glasses to protect their eyes, according to NASA.
UV radiation, whether from natural sunlight or artificial rays indoors, can damage the surface tissue, cornea and lens of the eye, according to the American Academy of Ophthalmology.
The only time viewers can look directly at the eclipse without eye protection is during the brief moments of totality, when the moon completely covers the sun. It is never safe to look directly at a partial solar eclipse without eye protection.
Viewers can also use handheld solar viewers and other safe solar filters that block out most of the Sun’s light and prevent eye damage.
An indirect viewing method, such as a pinhole projector to cast images of the Sun, can also be used to see the partial phases of the eclipse, NASA said. The device has a small opening that projects an image of the Sun onto a nearby surface.
It is not safe to look at the eclipse through a camera lens, telescope, binoculars, or any other optical device while wearing eclipse glasses or using a handheld solar viewer because the concentrated solar rays could burn through the filter and cause serious eye injury, NASA said.
