Solar flares and other activity can disrupt radio communications, power grids and navigation signals, according to NASA.
A vast, volatile blemish has opened on the face of the Sun, and it is already rewriting the current solar cycle’s record book ...
A powerful M8.1 solar flare sent a full-halo coronal mass ejection toward Earth, and scientists expect it to trigger strong ...
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 powerful X1.9 solar flare from new sunspot AR4299 triggered strong radio blackouts, as giant sunspot AR4294 rotates into ...
A sunspot, potentially generating multiple solar flares, may lead to auroras that could be visible as far south as Alabama.
The sun’s current 11-year activity cycle has already peaked—but extreme outbursts from our star may still be in store ...
Discover what happens during a solar flare: sun eruptions, coronal mass ejection impacts, and space weather effects on Earth ...
On December 1, 2025, NASA's Solar Dynamics Observatory observed a large spot on the Sun, known as Active Region (AR) 4294-96.
A massive sunspot cluster, reminiscent of the infamous Carrington Event, has emerged on the sun's surface, sparking intrigue ...