why is the sky blue
why is the sky blue The sky appears blue to us because of a phenomenon called Rayleigh scattering. Sunlight is made up of different colors of light, with each color having a different wavelength. When sunlight enters the Earth's atmosphere, the shorter blue wavelengths of light are scattered more easily than the longer red wavelengths. This scattering causes the blue light to be scattered in all directions and to reach our eyes from all parts of the sky, giving the sky a blue appearance. In addition to Rayleigh scattering, other factors such as the Earth's atmosphere, the angle of the Sun's light, and the presence of pollutants or other particles in the air can also affect the color of the sky.