Why does the green hue typically dominate the visual experience of the aurora, even when other colors are present?

Answer

The green emission from oxygen at lower altitudes is extremely efficient and easily perceived by the human eye.

Even when the atmosphere creates a mixture of colors, the green emission generated by oxygen at lower altitudes is extremely efficient and readily perceived by the human eye, causing it to overwhelm the observer's vision.

Why does the green hue typically dominate the visual experience of the aurora, even when other colors are present?

#Videos

What Is an Aurora? - YouTube

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