There is a partial eclipse of the sun tomorrow

10 Juin, 2021, 14:19 | Auteur: Adelaide Bullion
  • How to watch 'the best eclipse in a decade' across Northern Ireland tomorrow

The partial eclipse will begin in the United Kingdom just after 10am and will finish around 12.30pm, up to a third of the Sun will be blocked out for about two hours as the moon passes between it and the Earth, observers will get to see a partial eclipse, meaning the sun will look like a crescent instead of a ring.

Instead, skywatchers can use solar eclipse glasses, which "block 100 percent of the Sun's harmful ultraviolet and infrared rays and 99.99 percent of intense visible light", said Paulo Aur, chief financial officer and chief operating officer at American Paper Optics, which manufactures solar eclipse glasses.

An annular eclipse occurs when the sun and moon are exactly in line with the Earth, but the apparent size of the moon is smaller than that of the sun. As a result, the size of the moon and the size of the Sun correlate nearly perfectly - except that the Moon's distance from the Earth varies by about 10 percent, depending on whether it's at perihelion (closest to us) and aphelion (farthest away). Because they are aligned, the Moon leaves a shadow on Earth.

Because the ring of fire won't be visible from Rome, the Virtual Telescope project is partnering with skywatchers in Canada, where the eclipse will be annular, Gianluca Masi, astrophysicist and director of the Virtual Telescope Project, wrote on the website. It will see the Moon move across the face of our star but not completely block out the light coming from it.

"The partial eclipse will be the deepest we have had since March 2015 and there will not be another like this until March 2025". The annular eclipse will first appear for viewers along the north shore of Ontario's Lake Superior, then it will head over Hudson Bay before gliding across the northern tip of Quebec, Baffin Island, and Greenland.

This particular event is what's termed an annular eclipse.

Very few people will be able to catch that, but people in the eastern USA should be able to see a partial eclipse at dawn. The further north you are, the more of the sun will be obscured by the moon.

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The partial eclipse will start around 11.20am and will be at its peak an hour later. If the skies are clear, a spectacular crescent-shaped sun will appear above the horizon for people in major metropolitan areas, including Boston, New York, Philadelphia, and Washington, D.C.

Because the eclipse occurs around sunrise, it's important to scout out a good viewing spot beforehand with easy views of the eastern horizon. The biggest challenge to catching the Devil's Horns effect for city dwellers will be finding a spot that has a totally unobstructed view of the sunrise. You shouldn't look directly at the sun at any time, it can cause damage to your eyes.

The delicate retina cells can be damaged by the sun's rays, which remain powerful even during an eclipse.

Two pieces of paper or cardboard and a pin are all you need to set up your own "projector" that will allow you to safely, indirectly view the partial eclipse.

What section of the sun is blocked depends on your vantage point.

If you still have eclipse glasses left over from the last major solar eclipse in 2017, you can break them out for observing this one as well, if you like.

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