Question

How can we explain the reddish appearance of the sun at sunrise or sunset? Why does it not appear red at noon?

Answer 1

• Sun appears red at sunrise and sunset : At sunrise and sunset, sun is closer to the horizon. 
• The sunlight passes through denser layer of air and covers larger distance before reaching our eyes.
• Most of the blue light gets scattered. 
• And red color reaches us which make the sun appears red at sunrise.
• During noon sunlight has to travel less distance to reach us. 
• Because most of the colors get scattered we see sun white in color during noon