Researchers in Japan traced a hidden medieval solar storm using ancient tree rings and centuries-old sky observations. The ...

Aurora chances rise: A glancing CME impact tonight could cause a G1 geomagnetic storm, making northern lights visible in high-latitude areas of the U.S. and U.K. From flare to Earth: The M5.7-class ...

The regular solar cycle is a mere climate murmur, but sudden geomagnetic jolts are a different story. These high-altitude ...

Powerful solar activity released by the sun likely created dazzling auroral displays in unexpected areas Monday evening and early Tuesday morning. It could also disrupt satellite-based communications ...

What’s happening: A powerful solar flare on May 10 sent a coronal mass ejection toward Earth, with a glancing impact expected late May 12 or early May 13. Aurora potential: A minor G1 geomagnetic ...

Last month, Earth was treated to a massive aurora borealis that reached as far south as Texas. The event was attributed to a solar storm that lasted nearly a full day and will likely contend for the ...