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

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 ...

The storm could also impact power systems and spacecraft operations.

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

Earth just experienced a rare S4 solar radiation storm, the most intense since 2003 — powerful for satellites and astronauts, ...

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 solar radiation storm stronger than one we've seen in over two decades is in progress, the Space Weather Prediction Center announced Monday.

The NOAA Space Weather Prediction Center has confirmed that severe G4 geomagnetic storm conditions have already been reached ...

A powerful solar flare triggered a rare geomagnetic storm watch, raising the chance of auroras across northern and mid-latitude states.

Northern lights were reported across mid-latitudes, with sightings stretching from Germany to the southwestern United States, ...

The main effect with this storm has been flights in parts of the World being diverted to not fly over the poles. And at times ...

A powerful flare unleashed a severe solar storm that caused auroras and GPS disruptions on Earth.