Sunsets on other planets appear different because of the differences in the atmosphere. The scattering is wavelength-dependent; shorter wavelengths (violet and blue) are scattered out of the sun beam more strongly than are longer wavelengths (orange and red). The Sun appears only about two-thirds the size that it appears in a sunset seen from the Earth. Sunset colors are a result of scattering by air molecules and small particles in the atmosphere. Free Sunset Wallpapers, Beautiful landscape Sea Beach wallpapers, Beautiful Sunset Pc Wallpapers, Sunset Images, Sunset Wallpapers, download desktop notebooks backgrounds, Beautiful Colors, HQ Sunset Wallpapers, all free to download.