This stunning light show was triggered by a G4 geomagnetic storm caused by a plume of solar plasma ejected from the sun.

On X, formerly Twitter, the Prediction Center said that a coronal mass ejection event arrived Sunday and caused a G4 ...

The storm reached G4 (Severe) levels, and a G4 or greater Geomagnetic Storm Watch remains in effect Thursday and into Friday, according to SWPC. SWPC continues to issue multiple warnings and ...

Scientists at NASA and NOAA think the sun has reached the maximum phase of the solar cycle, which means another year — at least — of intense Northern Lights.

Now that the sun has reached its solar maximum, aurora chasers should expect the northern lights to appear more frequently in ...

When this solar material reaches Earth, geomagnetic storms can occur, like the recent events when NOAA issued a strong G4 geomagnetic storm alert, during which the northern lights were visible as ...

Geomagnetic storms are ranked on a scale of one to five, with five being the strongest. Last week there was a particularly strong G4 storm, and the northern lights were visible in parts of ...

A NASA model predicts that a geomagnetic storm could hit Earth on November 1, as a blast of solar plasma rockets toward our ...

which—for geomagnetic storms—runs from G1 (minor) to G5 (extreme). While the storm back in May was classified as a G5 (extreme) storm, the latest storm peaked at a G4 (severe) event.