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Development of sunspot group 4366. A complex 'bad actor' that produces many strong to very strong flares, but so far only one very slow coronal mass ejection. It mainly fires blanks. The animation shows the sun's photospheric magnetic field (the 'surface' field), sunspots and flares.

14,428 просмотров • 5 месяцев назад •via X (Twitter)

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*SEVERE geomagnetic storm possible with U.S. aurora borealis display* *Northern lights possible at mid-latitudes early Sunday morning or Sunday night* *Specifics TBD – map coming later today* On Friday evening Eastern time, a major solar flare occurred from sunspot #4100. A sunspot is a bruise-like discoloration on the sun that throbs and pulsates with energy. Following the solar flare, which is a flash of light and radiation, a significant CME — or coronal mass ejection — was hurled directly toward Earth. Imagine a shockwave of magnetism and high-energy particles rippling through space like an interstellar tsunami. It’s heading for us at speeds around 1,200 miles per second — that’s very fast! We know it’s Earth-directed because our sensors indicate a “full halo” CME. See the solar material appearing to fan out in all directions? That’s an indicator it’s Earth-bound. It’s like if a train is coming right at you — you’d only see the train getting bigger. Once this electromagnetic shockwave reaches Earth, the energy will be absorbed and dissipated by our magnetic field. It will be transformed into visible light — the aurora. Since there’s a LOT of energy, we’ll probably get the aurora borealis (the northern lights) down to the mid latitudes. This could mean parts of the central United States, the Midwest, the Mid-Atlantic and perhaps as far south as northern California. There’s even a chance that parts of the Mid-South could see the aurora IF a direct impact occurs and the orientation of Earth’s magnetic field cooperates. Scientists at the Space Weather Prediction Center in Boulder, Colorado are working to iron that out.

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🚨 SCIENTISTS JUST SHOWED THAT LIGHT CAN TWIST MATTER USING ITS MAGNETIC FIELD. For a long time, physicists assumed the magnetic component of light was far too weak to have any meaningful effect on matter compared to its electric field. New experiments are challenging that view. Researchers have demonstrated that intense, properly structured light can induce magnetization and even mechanical twisting in materials through its magnetic field alone. This is an extension of the inverse Faraday effect, but observed with greater strength and control than many expected. Why this matters: • It opens new ways to control magnetism and material properties using only light • Could lead to faster, more energy-efficient magnetic memory and spintronic devices • Offers a new tool for manipulating matter at the nanoscale without physical contact • Bridges optics and magnetism in ways that were previously difficult to achieve The deeper implication: Light is not just an information carrier under the right conditions, its magnetic field can directly reshape the magnetic and mechanical state of matter. This blurs the line between electromagnetic waves and material control. If these effects can be scaled and made practical, we may eventually use light itself as a precise tool to write magnetic information or mechanically actuate tiny structures, rather than relying solely on electric currents or physical forces. We’re discovering that light still has hidden capabilities we haven’t fully exploited. How do you think being able to control matter with light’s magnetic field could change technology in the next decade? Follow for more frontier optics, quantum materials, and light-matter physics.

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