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

As this month's string of powerful X-class solar flares sparked brilliant auroras that lit up skies across an unusually wide ...

The geomagnetic storm watch has been upgraded for Wednesday, Nov. 12 as a severe geomagnetic storm is now expected. A severe (G4) geomagnetic storm watch has been issued for Wednesday, Nov. 12 as the ...

NEW YORK (AP) — Solar storms brought colorful auroras to unexpected places on Tuesday night, and there could be more to come. Space weather forecasters confirmed that storms reached severe levels, ...

The NOAA Space Weather Prediction Center similarly upgraded its forecast from G3, meaning “strong,” to G4, indicating “severe” conditions, for Wednesday. Meanwhile, the British Geological Society says ...

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 ...