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

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

A powerful X1.9 solar flare from new sunspot AR4299 triggered strong radio blackouts, as giant sunspot AR4294 rotates into ...

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 ...

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

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

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 ...

Researchers from HSE University and the Space Research Institute of the Russian Academy of Sciences analyzed seven years of ...

An international team of researchers has used knowledge of historical geography to reexamine the earliest datable total solar ...

For Aditya-L1, India's first solar observation mission in space, the year 2026 is expected to be like no other. It's the ...

For thirty years, SOHO has delivered an unprecedented, nearly unbroken view of the Sun, surviving multiple near-catastrophic ...

India’s Aditya-L1 solar mission will observe the Sun’s peak activity in 2026, studying coronal mass ejections and protecting ...