Question

why the sun appears red at sunrise and at sunset?​

Answer 1

During sunrise and sunset, the rays have to travel a larger part of the atmosphere because they are very close to the horizon. Therefore, light other than red is mostly scattered away. Most of the red light, which is the least scattered, enters our eyes. Hence, the sun and the sky appear red.

Answer 2

HERE IS YOUR ANSWER:

This is because the sun remains low at the atmosphere around the horizon so the light coming from it gets to travel a long distance. So we only see the strongest color or with highest wavelength colour that's red . Thus sun appears red.

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