This geomagnetic storm interfered with telegraph communications around the globe. Sparks reportedly leapt from telegraph ...

A geomagnetic storm that occurred on Sunday may make the Northern Lights visible on Monday or Tuesday, the National Oceanic and Atmospheric Administration says.

The storm could also impact power systems and spacecraft operations.

A powerful geomagnetic storm caused by an X-class solar flare and a fast-moving coronal mass ejection has disrupted Earth's ...

A rare and fast CME triggered a severe G4 geomagnetic storm, producing brilliant auroras seen across Europe and the U.S. under ideal dark sky conditions.

A G-4 Geomagnetic Storm Watch has been issued for tonight and early Tuesday. This is considered a severe solar storm watch, which means we are likely to see highly elevated geomagnetic activity on ...

The night sky could once again be lit up by the northern lights as a Severe (G4) geomagnetic storm watch is in effect for ...

A severe geomagnetic storm has arrived at Earth, with conditions reaching G4 (severe) levels, South Africa’s National Space ...

A severe geomagnetic storm means there's a chance for a spectacular display of the northern lights over the US tonight.

Earth is currently experiencing a moderate geomagnetic storm.

It was one of the strongest geomagnetic storms in decades, traveling towards Earth at over 1 million miles per hour. And yet, ...

Powerful geomagnetic storms can result in beautiful visible auroras in the night sky, but they can also cause some technological issues, as well. This week, a "severe" G4 geomagnetic storm is expected ...