The sun is more likely to appear red at sunset than in the middle of the day as a result of the

Question

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The sun appears red at sunset primarily because the light has to travel through more of the Earth's atmosphere compared to when it is overhead. This longer path causes shorter wavelengths (blue and violet) to scatter out of the direct line of sight, leaving the longer wavelengths (red, orange, and yellow) to be seen more prominently.

The Sun Is More Likely to Appear Red at Sunset