The Sun has just hurled a powerful X-class flare toward Earth, and the resulting geomagnetic storm could push shimmering auroras far beyond their usual polar haunts. As the current solar cycle ...

Sunspot AR4274 blasted an X1.7-class solar flare on Nov. 9 and followed it up with an X1.2 flare. Credit: Space.com | footage ...

The sun is an incomprehensibly gigantic, constantly roiling nuclear furnace—but some days are even busier than others. Based on data collected by NASA’s Solar Dynamics Observatory, our solar system’s ...

The Sun released a strong solar flare on Tuesday, Feb. 3, following several eruptions in the preceding days, raising the possibility of increased geomagnetic storm activity. Nasa’s Solar Dynamic ...

CNN — The first large flare of the current solar cycle has erupted from the sun. The solar flare happened at sunspot AR2838 at 10:29 a.m. ET on July 3, according to the US Space Weather Prediction ...

The sun is not a static, tranquil sphere of gas, but an active, turbulent star with magnetic fields that twist and snap in powerful eruptions. Among the most striking and energetic of these eruptions ...