The sky appears blue due to the scattering of sunlight by atmospheric gas molecules. Shorter blue wavelengths scatter more than longer wavelengths like red, making the sky blue. Despite violet ...

Learn why the sky is blue through the lens of physics and chemistry. Discover the science behind Rayleigh scattering, light wavelengths, and atmospheric composition in this detailed explainer.

Redder when the Sun sets and rises. Of course, the sky is not always blue. And Rayleigh scattering also explains why the sky tends to be reddish when the Sun is close to the horizon – at sunrise ...

CAN any of your readers inform me why the sky is blue? Is it that the predominant colour of sunlight being orange, the regions devoid of sunlight appear of the complementary colour? If so, the ...