The sunspot, initially classified as large, came fully into view on November 30, confirming its truly vast size.

Sun’s far-side active region AR4294 produced multiple M-class and C-class flares, triggering radio blackouts, affecting solar wind, and increasing geomagnetic activity with potential auroras in ...

The R2 classification signifies that the solar flare has the potential to cause minor disruptions in radio communications and navigation systems on Earth. For instance, such flares can lead to ...

Solar flares are intense bursts of radiation resulting from the release of magnetic energy associated with sunspots. They are classified into different categories based on their intensity, with ...

Scientists have captured an exceptionally rare, high-resolution view of an active region that produced two powerful X-class ...

Several M-class solar flares erupt within just a few hours late Dec. 25. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. In the final hours of ...

Largest Solar Flare of 2025 causes radio blackouts across Europe and Africa. NOAA warns of a G3 storm that could affect power grids and GPS systems.

Solar flares are classified based on their strength into classes A, B, C, M, and X, with each class being ten times more powerful than the previous one.

Two new large solar flares over the last 36 hours have increased the chances of northern lights this week, here's the latest projections.

A severe geomagnetic storm is possible starting Tuesday evening, and the clouds in Minnesota could cooperate to see the northern lights overhead.

Scientists caught a massive and extremely powerful X-class solar flare being spat out from the sun on Friday (March 28), just before the stellar eruption triggered a radio blackout across two ...