A sunspot 10 times larger than Earth has appeared on the surface of the sun just as an X1.9-rated solar flare occurred.

A sunspot, potentially generating multiple solar flares, may lead to auroras that could be visible as far south as Alabama.

On December 1, 2025, NASA's Solar Dynamics Observatory observed a large spot on the Sun, known as Active Region (AR) 4294-96.

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

Sunspot AR3038 is massive and NASA's Solar Dynamics Observatory has had its eye on it. Watch a time-lapse of it growing to ...

Could we see more northern lights this month? Multiple sunspots are rotating into view, with one already release an X-class ...

The sunspot AR4299 has returned to the Earth side of the sun and has already produced a powerful solar flare, potentially ...

The spectacle was particularly enthralling for Lisa Upton, who caught the skies over Boulder, Colo., glowing eerily red. Upton, a heliophysicist at the Southwest Research Institute, is an expert in ...

NASA has drafted its Mars rover Perseverance to help monitor the sun’s activity. Every day for the next two months, the rover ...

Solar flares and other activity can disrupt radio communications, power grids and navigation signals, according to NASA.

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