A record-breaking study into a giant sunspot that triggered Earth's biggest geomagnetic storm in more than two decades has revealed surprising new details about the explosive dark patch. The monster ...

The sun is an incomprehensibly gigantic, constantly roiling nuclear furnace—but some days are even busier than others. Based ...

Forecasters have issued alerts for potential geomagnetic storms due to solar material hurtling toward Earth. Two coronal mass ejections—giant bursts of solar wind—were spotted on December 16 and are ...

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 ...