CAPE CANAVERAL, Fla. — October’s supermoon is the closest of the year and it’s teaming up with a comet for a rare stargazing two-for-one.

The third of four supermoons this year, it will be 222,055 miles (357,364 kilometers) away Wednesday night, making it seem even bigger and brighter than in August and September. It will reach its full lunar phase Thursday.

In a twist of cosmic fate, a comet is in the neighborhood. Discovered last year, comet Tsuchinshan-Atlas is now prominent in the Northern Hemisphere after wowing stargazers in the Southern Hemisphere.

The moonlight will wash out some of the comet’s tail, but it’s still worth a look after sunset, said NASA’s Bill Cooke.

“Most astronomers hate the full moon because its bright light messes up observing other objects. So it’s a bit hard for us to wax poetic about it even if it’s the biggest supermoon of 2024,” he said in an email.

Better catch the comet; it may never return. But don’t fret if you miss Thursday’s supermoon. The fourth and final supermoon of the year will rise on Nov. 15.

More a popular term than a scientific one, a supermoon occurs when a full lunar phase syncs up with an especially close swing around Earth. This usually happens only three or four times a year and consecutively, given the moon’s constantly shifting, oval-shaped orbit.

A supermoon obviously isn’t bigger, but it can appear that way, although scientists say the difference can be barely perceptible.

There’s a quartet of supermoons this year.

The one in August was 224,917 miles (361,970 kilometers) away. September’s was nearly 3,000 miles (4,484 kilometers) closer the night of Sept. 17 into the following morning. A partial lunar eclipse also unfolded that night, visible in much of the Americas, Africa and Europe as Earth’s shadow fell on the moon, resembling a small bite.

October’s supermoon is the year’s closest at 222,055 miles (357,364 kilometers) from Earth, followed by the November supermoon at a distance of 224,853 miles (361,867 kilometers).

Scientists point out that only the keenest observers can discern the subtle differences. It’s easier to detect the change in brightness — a supermoon can be 30% brighter than average.

With the U.S. and other countries ramping up lunar exploration with landers and eventually astronauts, the moon beckons brighter than ever.

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The Associated Press Health and Science Department receives support from the Howard Hughes Medical Institute’s Science and Educational Media Group. The AP is solely responsible for all content.

NEW YORK — A “ring of fire” eclipse of the sun is coming. But only a lucky few will be in the path.

The annular solar eclipsewill be visible Wednesday over Easter Island and the tips of Argentina and Chile.

Here’s how to safely watch the final solar spectacle of the year.

Solar eclipses happen when the sun, moon and Earth line up just so. The moon casts a shadow that can partially or totally block the sun’s light.

During an annular eclipse, the moon obscures all but a ring-shaped sliver of the sun. That’s because the moon is at a point in its orbit that’s farther from Earth.

“The moon is just not quite big enough to cover the sun,” said Carolyn Sumners at the Houston Museum of Natural Science.

This eclipse will occur mostly over water in the Pacific. Rapa Nui, known as Easter Island, is in the path along with parts of Argentina and Chile.

A partial solar eclipse, when the sun appears as a crescent, can be seen from several locations including Brazil, Paraguay, Uruguay and Hawaii.

Solar eclipses happen about two to five times a year. April’s total eclipse of the sun dazzled skywatchers in parts of Mexico, Canada and the U.S.

Looking directly at the sun can cause eye damage, even when most of it is covered.

The annular eclipse is safe to spot wearing solar eclipse glasses, which block out ultraviolet light from the sun and nearly all visible light. Sunglasses or binoculars won’t cut it.

Glasses should say they comply with ISO 12312-2 standards, though fake suppliers can also list this on their products.

If you don’t have eclipse glasses, you can still enjoy the spectacle indirectly. Make a pinhole projector using household materials or hold up a colander and look down to see an image of the eclipse projected below.

Peering at the ground under a shady tree can also reveal crescent shadows as the sunlight filters through branches and leaves.

Two partial solar eclipses will grace the skies next year in March and September.

The next total solar eclipse won’t arrive until 2026 and will pass over the northern fringes of Greenland, Iceland and Spain.

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The Associated Press Health and Science Department receives support from the Howard Hughes Medical Institute’s Science and Educational Media Group. The AP is solely responsible for all content.