What phenomenon does the Earth's atmosphere cause by scattering sunlight during the day?

Answer

Causing the sky to appear blue

The scattering of sunlight by Earth's atmosphere is the defining characteristic of our daytime sky appearance. When sunlight enters the atmosphere, shorter wavelengths of light, like blue light, are scattered more effectively in all directions by the atmospheric gases and particles. This pervasive scattering effect ensures that no matter where an observer looks during the day, some of this scattered blue light reaches their eyes, making the entire sky appear blue. Furthermore, this scattering process is detrimental to astronomical viewing, as it diminishes the intensity of the faint, direct light coming from deep space objects like the Milky Way, thereby creating a background glow that masks the galaxy's detail.

What phenomenon does the Earth's atmosphere cause by scattering sunlight during the day?

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