Explain why the colour of the sky is blue (Cyan).

Blue colour of the sky is due to

Colour of the sky is blue due to

The blue colour of the sky is due to

Colour of the sky is blue due to

The blue colour of the sky is duo to

Stars appear to be twinkling but planets do not twinkle. Why? Explain why the colour of the clear sky during day appears blue and during sunset appears red.