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

Stunning imagery from outer space shows the power of the Sun, with a massive solar flare and coronal mass ejection erupting from the giant star’s surface, but space experts say there is no need to ...

Nearly a dozen states in the northern U.S. may have another opportunity to see the northern lights on Saturday, after a recent solar flare briefly disrupted radio communications, according to the ...

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

After weeks of relative quiet, the Sun has erupted with a series of powerful solar flares, signaling a return to more active space weather conditions. Over the weekend, three M-class solar flares were ...

Several states across the northern U.S. have an opportunity to see aurora borealis on Monday, while some radio blackouts are expected after a recent solar flare, according to the National Oceanic and ...