What phenomenon causes the Sun to appear yellow when viewed from Earth during the day?

Answer

Rayleigh scattering of shorter wavelengths

The Earth's atmosphere scatters shorter wavelengths, primarily blue and violet light, away from the direct beam of sunlight traveling towards the observer, causing the remaining light to appear shifted toward longer wavelengths, resulting in a yellow tint.

What phenomenon causes the Sun to appear yellow when viewed from Earth during the day?
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