Partly solar eclipse occurs Saturday! What to expect

What a difference a year does! Just over a year ago, millions of North America were worried about the “Great American Sun Eclipse” on 21 August. Now, Saturday, August 11, another eclipse will take place, but it’s likely that future audience will be significantly smaller.

The sun’s eclipse of the sun will be a partial eclipse of the sun, not the spectacular total solar eclipse that estimated millions last year. It will be visible from most of Asia, far north of Europe, Iceland and Greenland, and from a cross in northern and eastern Canada.

In fact, parts of Newfoundland and Labrador and Quebec (along the lower northern shores of the Gulf of St. Lawrence) get a brief glimpse of a small dent out of the sun’s upper left edge for a few minutes immediately after the sunrise. [Solar Eclipses 201

8: When and How to See Them]

You can find local view details for 29 places in the visibility area here, with permission by veteran NASA eclipse researcher Fred Eclipse from

You can view the viewing times for some places in Newfoundland and Quebec in the table below. . The eclipse begins before the sunrise.

Location Time zone Max. Eclipse % Obscuration Eclipse Ends
Blanc Sablon QC Atlantic Standard 4:27 a.m. 3 cents 4:47 am.
St. Anthony, NL NFLD Daylight 5:56 a.m. 3 percent 6:06 a.m.
G. Harbor, NL NFLD Daylight 5:56 4-percent 6:19 am

Of course, if you happen to be in the zone of visibility for this eclipse, ] never see directly on the sun (unless you use approved filters or sunglasses). Putting directly into the sun can damage your eyesight.

The time of greatest eclipse, with almost 75 percent of the sun hidden, will occur at local sunset in Russia from Kolyuchinskaya Bay in northeastern Siberia – a large, usually ice-covered bay in the Chukchi Sea on the northern shore of the Chukotka peninsula. Cape Vankarem is to the west, and Neskynpil ‘gyn Lagoon and Cape Serdtse-Kamen are in the east.

It’s not the place to take your family on a weekend gala!

Sun eclipses arise when the moon crosses the sun’s face, seen from the ground.

When the moon completely covers the sun, it creates a total eclipse of darkness that creates a moon shadow over the earth’s surface. Sometimes the moon only partially covers the sun, creates a partial solar eclipse, or does not completely hide the sun (an annular or “ring of fire” eclipse). Because the moon’s path is tilted, it does not always block the sun as it circles the earth every month.

(The video above was created by Larry Koehn of

If you have not followed, it will be the third eclipse in less than a month.

On July 27, we had an amazing dark eclipse – the longest total lunar eclipse of the century. And flanking the lunar eclipse (two weeks before, and now two weeks after) are two partial solar eclipses. [See amazing photos of the July 27 lunar eclipse]

During the moon eclipse, the moon crossed the eclipse – the apparent path of the sun in our sky – while in full swing on July 27th, our natural satellite passed through the earth’s shadow (consequently total lunar eclipse). We call that transition point a “node”. Even under this eclipse the moon crossed the ecliptic that goes from north to south, the downward node in its orbit.

Due to the moon’s path, either two weeks before or after a total lunar eclipse, the moon returns to the side of its path and crosses the eclipse again – this time at the New Moon phase – resulting in an eclipse of Sun. So there are two eclipses, one sun and one moon, connected by the moon’s path. [See amazing photos of the July 27 lunar eclipse]

We call this for a sunset year.

But so central was the 27th of July the eclipse, with the moon passing almost directly through the middle of the shadow of the earth, that it was allowed not only one but two partial solar eclipses: one that occurred two weeks before the eclipse of darkness, and another August 11 (two weeks afterwards).

Thus, we get three eclipses that occur during this 29.53-day synodical month month, where we usually only have two.

Under the same eclipse, both solar eclipses are said at the same node (ascending) of the moon’s path. After arriving at the rising node almost too late for the partial solar eclipse on July 13, the moon now begins the same node almost too early.

It is 20 hours after the crossing of the ecliptic, the moon arrives at the new phase. But then the shoulder passes its shadow well north of the earth. Because the moon is near perigee, the darkest shadow of the moon – called the umbrae – disappears far beyond us (with a distance of approximately three times the radius of the earth), but also completely lacking touch of our planet, which passes 4,500 miles (7,300 miles) across the North Pole.

So, unlike last year, there is no place on earth to see the glorious spectacle of a total eclipse. Instead, the moon’s outer shadow (penumbra) will brush the top of our globe, giving a much more modest partial eclipse.

There is a solar-related accident during Saturday’s partial solar eclipse: With great luck, the eclipse will occur the same day as NASA will launch Parker Solar Probe against the sun.

Parker Solar Probe will fly faster and closer to the sun than any other spacecraft. It’s actually going to “touch” the sun and fly through the star’s outer atmosphere, called corona. Corona is the shining ring of light visible around the moon under a total eclipse, and scientists hope that Parker Solar Probe will help answer long-lasting mysteries about the region.

Space launch starts Saturday morning at 3: 33:00 EDT (0733 GMT) on top of a United Launch Alliance Delta IV Heavy rocket. You can watch the release live here, started at 3:00 EDT (0700 GMT), with permission from NASA TV.

In addition, the annual Perseid meteor shower is the peak of the week. So, if you miss the eclipse, you can always look for Comet Swift-Tuttle meteors. Here is our practical 2018 Perseid meteor shower guide.

Editor’s Note: If you live in the Visibility Zone of the Partial Sun Eclipse on August 11th and you see a photo of the event, let us know! You can send your photos and comments to

Joe Rao works as instructor and guest lecturer at New York’s Hayden Planetarium. He writes about astronomy for the newspaper Natural History, Farmers Almanac and other publications, and he is also a meteorologist on camera for Verizon FiOS1 News in the New York Lower Hudson Valley. Follow us @Spacedotcom Facebookand Google+. Original article on


(Visited 36 times, 1 visits today)

Leave a Reply