Blue color of sky has always been a matter of interest and awe for the human mind. The calm blue color mesmerises us all since our childhood. A lot many theories were put forward to explain this phenomena. In scientific terms, this is known as Raleigh phenomena. The electromagnetic radiations of sunlight get scattered by the particles and gas molecules in air. These particles scatter the low wavelength blue light the most as compared to the longer wavelength red light. This leads to blue colored appearance of the sky.