The X5.1-class eruption from sunspot AR4274 is this year's most powerful solar flare and Earth is in the firing line. When you purchase through links on our site, we may earn an affiliate commission.

In the pre-dawn hours of Nov. 11, the sun let loose a dazzling but disruptive display of its power: an X5.1-class solar flare, the most intense eruption of 2025 and the strongest since October 2024.

A powerful solar storm could spark auroras as far south as northern California and Alabama on Wednesday, thanks to a particularly rambunctious area on the sun dubbed active region 4274 (AR4274). In ...

Sunspot AR4274 erupted with the biggest solar flare of the year and it has Earth in it's sights. The X5.16-class flare was captured by NASA's Solar Dynamics Observatory. Credit: Space.com | footage ...

The sun just flexed its power, and the Earth felt the shockwave immediately. In the largest solar eruption of 2025, a massive burst of energy classified as an X5.1-class flare tore from the sun, ...

Over the past few days, an active sunspot has erupted multiple times, sending clouds of high-energy plasma into space. The sunspot happens to be facing Earth just now, so the plasma clouds are heading ...

The sun erupted in a massive solar flare, the largest of the year, sending a wave of solar activity that could affect Earth starting on Tuesday. A powerful X5.1-class flare, capable of disrupting ...

The same active region of the sun that produced stunning auroras that were visible as far south as Mexico earlier this week has erupted again. On Friday the sun released a powerful, X4.0-class solar ...

The back-to-back eruptions caused radio blackouts across two hemispheres as the active sunspots turn to face Earth. When you purchase through links on our site, we may earn an affiliate commission.

The sun released another major eruption on November 14, sending out an intense X4-class flare. This was the second-most powerful solar event of 2025 so far and came from the same extremely active ...

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