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How do auroras borealis get their color?

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The otherworldly colors of the Northern Lights and Southern Lights have fueled folklore for millennia, but their cause is actually quite straightforward. The aurora is caused by the interaction of high-energy particles (usually electrons) with neutral atoms in earth’s upper atmosphere. read more

When they do, they can cause the dramatic displays known as the aurora borealis. [Infographics: How the Northern Lights Work & Anatomy of Sun Storms & Solar Flares] Auroras occur not only on Earth, but also on other worlds in our solar system (and perhaps exoplanets as well). read more

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