what colour is the sky?

The color of the sky appears primarily blue during the day due to a phenomenon called Rayleigh scattering. This scattering occurs when sunlight interacts with the Earth’s atmosphere, scattering shorter blue wavelengths of light more than the longer red wavelengths. During sunrise and sunset, the sky can take on shades of red, orange, and pink due to the increased distance the sunlight travels through the atmosphere, which scatters the blue light out of view. The sky can also appear gray or white when overcast with clouds.