A strong geomagnetic storm is forecast for Tuesday, according to the National Oceanic and Atmospheric Administration's Space ...

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

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 solar eruption on November 30 unleashed disruptions across aviation, communications, and monitoring systems in the ...

Solar scientists are tracking a surge in activity on the sun that could unleash powerful storms toward Earth, with the potential to disrupt electricity, communications and navigation on a global scale ...

The quiet arrival offers another indication that the sun is moving into the declining phase of its 11-year cycle. A stealth solar storm hit Earth on Nov. 20. It arrived without warning and may have ...

NEW YORK — Space weather forecasters issued an alert on Tuesday for incoming severe solar storms that could produce colorful northern lights and temporarily disrupt communications. In the past few ...