Question

why the sky is red during sun set or sun rise?​

Answer 1

Answer:

The light from the Sun travels through Earth's atmosphere it undergoes scattering before it reaches us. ... Thus, there is more probability for shorter wavelength light to get more scattered than for the longer wavelength light. Hence, the Sun (and sunrise and sunset) appears reddish orange during sunset and sunrise.

Explanation:

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Answer 2

The light from the Sun travels through Earth's atmosphere it undergoes scattering before it reaches us. ... Thus, there is more probability for shorter wavelength light to get more scattered than for the longer wavelength light. Hence, the Sun (and sunrise and sunset) appears reddish orange during sunset and sunrise.