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Yellow and pink colors result from the mixing of red with green or blue light, typically observed during significant geomagnetic storms. The altitude and energy levels of the incoming particles play critical roles in determining the vivid colors of the aurora you witness.. Some are a dark yellow color while others have a blue or purplish light. How about neon signs? They have many different colors. Streetlights and neon signs are filled with gas. When they are turned on, an applied voltage energizes electrons in the gas. These electrons strike the gas molecules, which excites them to emit light.
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For this reason, it took scientists a long time to figure out that the green light of the aurora was coming from oxygen atoms. The yellow-orange glow of sodium was known in the 1860s, but it wasn’t until the 1920s that Canadian scientists figured out the auroral green was due to oxygen. What makes the red light?. The northern and southern lights, auroras visible from the poles, glow with a range of different colored lights. Here’s the reason for each of those colors.
