An annular solar eclipse will be visible across the Western Hemisphere this fall, and some Americans will be able to see it, NASA is predicting.

NASA projects the eclipse will be visible across North America, Central America, and South America, including parts of the U.S. and Mexico.

The annular eclipse will be the first eclipse of any variation since April, when a hybrid solar eclipse was visible over the Pacific Ocean and Indian Ocean and partially visible over Australia, Southeast Asia and Antarctica, per NASA.

Here's what you need to know about the eclipse coming up later this year and how you can watch it.

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An annular solar eclipse occurs when the moon passes in between the sun and the Earth while at its farthest point from Earth.

"Because the moon is farther away from Earth, it appears smaller than the sun and does not completely cover the star. This creates a 'ring of fire' effect in the sky," according to NASA.

Different phases occur during an annular solar eclipse. It begins at the partial eclipse phase, which is when a partial eclipse is created due to the moon beginning to move in front of the sun.

"The moon will slowly block more and more of the sun’s light, making the sun appear as a smaller and smaller crescent before it forms a 'C' shape. This phase is also known as first contact," NASA states.

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Following the partial eclipse is the annularity phase, which is when the moon completely passes in front of the sun, which leaves a "ring" of the sun available behind the moon. This will occur around an hour and 20 minutes after the partial eclipse phase starts.

According to NASA, annularity will last between 1 and 5 minutes depending on where you are located.

"During the eclipse, the sky will grow dimmer, though not as dark as during a total solar eclipse. Some animals may begin to behave as if it is dusk and the air may feel cooler," NASA's website said.

Following the annularity phase, where the moon will pass across the sun's face for the next hour and 20 minutes, once again creating a partial eclipse phase. The eclipse will end after the moon completely passes past the sun.

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When will the solar eclipse occur?

The solar eclipse will happen on Saturday, Oct. 14. NASA states the annular solar eclipse will begin in Oregon around 9:13 a.m. PT and end in Texas around 12:03 p.m. CT.

Following the eclipse's visibility in the U.S., it will pass over Mexico and Central America, followed by South America. The eclipse is expected to end at sunset in the Atlantic Ocean.

The Oct. 14 annular eclipse will be the last of its kind that will be visible for people in the U.S. until June 21, 2039, per NASA.

Where will the solar eclipse be visible?

The annular eclipse will first be seen in the U.S. near Eugene, Oregon, before traveling across the country with visibility in parts of Nevada, Utah, New Mexico, Texas, California, Idaho, Colorado and Arizona. It will end in Texas.

The partial solar eclipse is expected to be visible in the 48 contiguous states as well as Alaska.

After Americans across the West get a glimpse, the annular solar eclipse' path will move across Central America, where it will be visible in parts of Mexico, Belize, Honduras and Panama. The annular eclipse will then be visible in South America, including over Colombia. It will end off the coast of Natal, Brazil, in the Atlantic Ocean.

How to watch the solar eclipse safely

Because the sun is not completely blocked by the moon during an annular solar eclipse, NASA says it's not safe to look directly at the sun during the event.

"Viewing any part of the bright sun through a camera lens, binoculars, or a telescope without a special-purpose solar filter secured over the front of the optics will instantly cause severe eye injury," the website states.

If you want to watch an annular solar eclipse with your eyes, NASA states you need to look through solar viewing glasses, also known as eclipse glasses, or a certified handheld solar viewer.

"Eclipse glasses are NOT regular sunglasses; regular sunglasses, no matter how dark, are not safe for viewing the sun. Safe solar viewers are thousands of times darker and must comply with the ISO 12312-2 international standard," the website states. "Always inspect your eclipse glasses or handheld viewer before use; if torn, scratched, or otherwise damaged, discard the device. Always supervise children using solar viewers."

​If you are unable to obtain eclipse glasses or a handheld solar viewer, NASA recommends using an indirect viewing method to view the eclipse without looking directly at the sun.

One example is using a pinhole projector, which has a small opening that projects the image of the sun onto a nearby surface. You can safely view the image when the sun is at your back, but do not view the eclipse with the pinhole projector.

Additionally, NASA advises people to not use eclipse glasses or handheld viewers while also viewing the event through cameras, binoculars, or telescopes, because those devices require different types of solar filters to be safe.

"When viewing a partial or annular eclipse through cameras, binoculars, or telescopes equipped with proper solar filters, you do not need to wear eclipse glasses," the website states.