This Saturday, people in the Americas will be graced by the spectacular "ring of fire" annular solar eclipse. And although astronomers and sky-watchers are abuzz with excitement, a word of caution is in the air. The next such event won't come around until 2046, making this an unmissable phenomenon. However, as you prepare to witness this celestial spectacular, it's essential to do so safely – and no, sunglasses won’t suffice. <img class="wp-image-1263232070 size-full" src="https://img.vt.co/2023/10/GettyImages-868697196-scaled.jpg" alt="ring of fire eclipse" width="2560" height="1575" />[[imagecaption|| A rare ring of fire eclipse will take place this weekend. Credit: Getty Images/Tomohiro Ohsumi/Bloomberg]] Understanding the Annular Solar Eclipse Unlike a total solar eclipse where the moon completely obscures the sun, an annular eclipse occurs when the moon, at its farthest orbital point from Earth, leaves the sun's blazing edge visible. This creates the dramatic "ring of fire" effect. <a href="https://science.nasa.gov/eclipses/safety/">NASA</a> further informs that a crescent-shaped partial solar eclipse will be discernible in all 49 continental US states, including Alaska, if weather conditions permit. Eyes on Safety NASA and experts from the National Solar Observatory have a clear message: never gaze at the sun without appropriate protection, except during the short phase of "totality" in a total eclipse. The strong sunlight can be harmful to your eyes. Speaking to <a href="https://edition.cnn.com/2023/10/11/world/solar-eclipse-glasses-eye-protection-scn/index.html">CNN</a>, Dr. Carrie Black of the National Solar Observatory cautions: "During an annular eclipse, because the surface of the sun is not completely covered, you must wear glasses or view indirectly at all times." Cases of solar retinopathy - irreversible retinal damage due to solar exposure - have been reported in the past from direct sun viewing. For a safe eclipse experience, use certified eclipse glasses or handheld solar viewers. Alex Lockwood from NASA headquarters underscores their importance, stating: "You need certified <a href="https://eclipse.aas.org/eye-safety/iso12312-2">ISO 12312-2</a> compliant solar eclipse glasses [...] We cannot stress enough how important it is to obtain a pair of safe certified solar eclipse glasses in order to witness this annular event." <img class="size-full wp-image-1263232646" src="https://img.vt.co/2023/10/GettyImages-1190487374-1.jpg" alt="" width="1024" height="683" />[[imagecaption|| Credit: Anadolu Agency / Getty]] Contrary to popular belief, regular sunglasses can't replace eclipse glasses. Eclipse glasses are 100,000 times darker, adhering to international safety standards. Their lenses are infused with carbon particles, blocking almost all visible, infrared, and ultraviolet light – a feature your standard sunglasses lack. To ensure you're buying legitimate protection, the American Astronomical Society has curated a list of safe manufacturers and resellers of eclipse glasses and filters. Usage Guidelines When preparing to view the eclipse: <ul> <li>Put on your eclipse glasses before gazing skywards.</li> <li>Always look away from the sun before removing your glasses.</li> <li>Supervise children to ensure they keep their glasses on.</li> <li>Regular eyeglass wearers should place eclipse glasses over their usual pair or use a handheld viewer in front.</li> <li>Avoid looking at the sun through unfiltered optical devices like cameras or telescopes while wearing eclipse glasses, as concentrated solar rays can damage your eyes.</li> <li>Your eclipse glasses, if undamaged and compliant with ISO 12312-2 safety standards, have an indefinite lifespan. They can be saved for future eclipses, like the total solar eclipse slated for April 8, 2024. Store them at room temperature and avoid cleaning them with moisture. If they ever become damaged, do not use them.</li> </ul> Alternative Viewing Method Welding filters can also be employed to view the eclipse. Filters with a shade number of 12 or higher ensure safety, although shades 13 or 14 are often preferred for a more vibrant view. Do note, the sun will appear green when viewed through these filters. You can also try and create a "pinhole projector", information of which can be found <a href="https://eclipse.aas.org/eye-safety/projection">here</a>. In conclusion, while the upcoming annular solar eclipse promises to be a mesmerizing event, your safety should be paramount. With the right precautions, you can safely enjoy nature's grand display and cherish the memory for years to come. <h6>Featured image credit: Anadolu Agency / Getty</h6>

Expert issues warning over this weekend's 'ring of fire' solar eclipse

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