Geomagnetic storms occur when charged particles from the sun collide with Earth’s atmosphere, creating auroras.

The northern lights were visible Tuesday night across the Chicago area, illuminating the sky with brightly colorful displays ...

A severe geomagnetic storm on November 12 caused by a coronal mass ejection from the sun led to beautiful auroras all over ...

A powerful solar flare and rare severe geomagnetic storm triggered aurora lights and precautionary measures aboard the ISS.

Space weather experts are monitoring for the potential of a so-called "cannibal geomagnetic storm" Wednesday, which could ...

A severe geomagnetic storm is likely this evening or overnight. Not all of the United States will have clear enough skies to ...

A severe geomagnetic storm put the power grids in at least 11 states at risk this week, posing a threat to millions.

A severe geomagnetic storm lit up Australia's night sky on November 12, producing one of the most stunning aurora australis, ...

Geomagnetic storm activity is expected to continue this week, but will Nashville catch a second glimpse of the northern ...

As the northern lights lit up skies across the U.S., here's how agencies braced for potential disruptions to power grids and ...

While H⁺ ions come from both sources, plasma sheet O⁺ ions are exclusively ionospheric, making them key tracers of ionospheric contributions. During geomagnetic storms, massive solar wind energy input ...

Forecasters warned the magnetic storm could cause power fluctuations, GPS degradation, and intermittent disruptions to radios.