A coronal mass ejection -- a massive burst of solar material and magnetic field from the sun's outer atmosphere -- is ...

A powerful M8.1 solar flare sent a full-halo coronal mass ejection toward Earth, and scientists expect it to trigger strong G3 geomagnetic storm levels on Tuesday. Forecasts show the Kp index rising ...

If you have a clear sky this evening, the NOAA Space Weather Prediction Center upgraded their watch to a Strong (G3) Geomagnetic Storm warning, which may bring a chance of northern lights tonight!

A NOAA forecast suggest that Northern Lights may be visible in northern U.S. states as solar wind conditions intensify.

A NOAA forecast suggest that Northern Lights may be visible in northern U.S. states as solar wind conditions intensify.

A solar cycle is a roughly 11-year periodic change in the Sun characterized by variations in the number and intensity of sunspots, as well as a flipping of its magnetic poles.

The same geomagnetic storm that makes aurora sightings likely can disrupt power systems, navigation signals, and satellites.

Some Texans likely were perplexed to look up at the night sky in early November to see a red hue glowing. To much surprise, ...

A strong G3 geomagnetic storm could cause the sky to light up where you live, although is not expected to be seen as far south as the one in November.

Although forecasters are predicting a lower-level geomagnetic storm on Tuesday, they say people in many states may get a good ...

NOAA is predicting northern lights from Washington, to Michigan, to New York and Maine Tuesday. Here's what time to look up.

Space weather experts are monitoring for the potential of a so-called "cannibal geomagnetic storm" Wednesday, which could produce an even more brilliant display of the Northern Lights which dazzled ...