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A total solar eclipse will darken the sky for millions today! Here's what you need to know
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- DeepHorus
Today (Aug. 12), a long-awaited total solar eclipse will sweep across Greenland, Iceland and Spain, turning day into night for millions of skywatchers. It is Europe's first total solar eclipse since 1999, with the moon completely covering the sun for up to 2 minutes and 18 seconds. This celestial event matters not only as a spectacular visual experience but as a live demonstration of planetary mechanics.
An eclipse occurs when the moon passes directly between Earth and the sun, casting a shadow that races across the planet's surface. The path of totality is relatively narrow, and only those inside it experience complete darkness during daytime. Outside this path, a partial eclipse is visible across much of Europe, with more than 90 percent of the sun covered for major cities such as London, Paris and Dublin.
Today's shadow will unfold over roughly 96 minutes, beginning in Greenland in the late afternoon and ending in Spain in the evening. There, skywatchers will see a rare low-horizon sunset eclipse. The exact timing varies by location, with northern Spain and Iceland offering some of the best viewing windows. Weather remains a key uncertainty, and local forecasts will determine whether clouds obscure the spectacle.
Observing an eclipse requires strict safety precautions. During the partial phases, viewers must use solar eclipse glasses or certified solar filters to prevent permanent eye damage. Only during the brief totality, when the moon completely covers the sun, is it safe to look with the naked eye. As soon as sunlight reappears, protective eyewear must go back on. Experts emphasize that ordinary sunglasses are not sufficient.
Excitement is building across the scientific community and among eclipse chasers. Skywatching editor Daisy Dobrijevic is joining an expedition to Greenland with HX, while fellow writer Anthony Wood is observing from northern Spain with the DEB initiative and a team of citizen scientists. Space.com is running a live blog with weather reports, photos and observations throughout the day. Many organizations are providing livestreams for those outside the path of totality.
Beyond its visual splendor, the eclipse offers valuable scientific opportunities. Researchers will study the sun's corona, the outer atmosphere that becomes visible only during totality, and observe how animals react to sudden darkness. The event also has economic implications for the regions in the path, as eclipse tourism draws visitors and boosts local businesses. For many spectators, it is a once-in-a-lifetime chance to witness one of nature's most dramatic alignments.
Looking ahead, eclipse enthusiasts will not have to wait another 25 years for the next major event. A partial solar eclipse will be visible from parts of Europe and North Africa in 2025, and a total eclipse will cross southern Europe and the Arctic in 2026. Today's event also serves as a reminder of the importance of safe skywatching and the value of shared human experience. For now, all eyes are on the skies, hoping for clear weather.
