the beautiful sky

You can certainly see that the color of the sun at rising and drowning is the same, that is reddish, and the shape of the sun becomes larger than usual. Why is that so, Here is probably an analysis that can explain it all,

As the sun rises and sets, the sky is partially red, the sky is blue, and the light is polarized, This phenomenon can be explained on the basis of light scattering by molecules
atmosphere.

The scattering of light by the earth's atmosphere depends on the wavelength. For particles much smaller than the wavelength of light, the particles are not a major obstacle to long wavelengths compared to short ones. The scattering is reduced, red and orange light scattered less than blue and purple, which is the cause of the blue sky. At sunset, on the other hand, the beam of sunlight passes through the maximum atmospheric length

@muktar