The aurora may be visible in the sky again Saturday night, depending upon the weather, federal forecasters said.
Severe and extreme geomagnetic storms associated with coronal mass ejections, or solar eruptions, are likely Sunday, according to the National Oceanic and Atmospheric Administration’s Space Weather Prediction Center.
When the material from the sun arrives at Earth, it can cause a geomagnetic storm. During the storm, an aurora may be visible. An aurora is a natural electrical phenomenon characterized by shimmering lights in the upper atmosphere at night, usually near the northern or southern magnetic pole. They happen when energetic particles from the sun interact with atoms in the upper atmosphere.
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