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Aurora colors: What causes them and why do they vary? | Space
Aurora Colors Explained - Southern and Northern Lights
The colours of the northern lights | Canadian Space Agency
What is an aurora? The psychedelic lights explained - Astronomy …
Aurora Tutorial | NOAA / NWS Space Weather Prediction Center
What causes the different colors of the aurora? An expert explains …
Northern lights (aurora borealis): What they are & how to see them
Aurora - National Geographic Society
Auroras really are happening more often now. Here’s why.
Explainer: How auroras light up the sky - Science News Explores