Transcript
The Northern Lights, or aurora borealis, are caused by charged particles from the sun colliding with Earth's upper atmosphere. These particles, which travel as fast as 45 million mph, interact with nitrogen and oxygen molecules, exciting them and creating light as they return to their normal state. This display occurs primarily near the magnetic poles and is influenced by solar activity, with the brightest auroras often resulting from large solar events like coronal mass ejections.
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