NOAA projected Saturday night’s northern lights would have a Kp index of 3, a measure of the aurora’s strength on a scale of ...

A minor-to-moderate geomagnetic storm may produce a strong northern lights show in some of the northernmost U.S. states ...

Many people across the United States were treated to a rare sight this fall — the northern lights streaking across the night sky, even in urban areas like New York City. This spring, the ...