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"The light at sunrise and the light at sunset are indistinguishable. The two times of day feel different, but they look the same."
As a ray of white sunlight travels through the atmosphere to an observer, some of the colors are scattered out of the beam by air molecules and airborne particles, changing the final color of the beam the viewer sees. Because the shorter wavelength components, such as blue and green, scatter more strongly, these colors are preferentially removed from the beam....
Sunset colors are typically more brilliant than sunrise colors, because the evening air contains more particles than morning air