I WONDER - How Are The Different Colours Created In The Aurora Borealis?

The video explains how the Northern Lights' colors are influenced by gas particles colliding with Earth's magnetic field. Oxygen at higher altitudes emits green light, while nitrogen at lower altitudes produces red or blue light. The fusion of these colors creates a mesmerizing spectacle visible worldwide.

What colors do nitrogen particles produce at lower altitudes?

How does the fusion of colors in the Northern Lights affect viewers?