Question

Why does the sun appear red at sunset ?

Answer 1

In t the in sunset, the sunlight has to travel more distance through the atmosphere of the earth for reaching us. So, as the sunlight is travelling more distance through the atmosphere of the earth, only the colours having high wavelength can reach us and colours having low wavelength are missing in the midway because they are scattered easily as the atmosphere of the earth contains air, moisture, smoke and other dust particles.