A sunset occurs when the sun dips below the horizon, creating a beautiful display of colors in the sky. This phenomenon happens daily as the Earth rotates, causing the sun to appear to move across the sky. The colors seen during a sunset can range from vibrant oranges and reds to soft pinks and purples, influenced by atmospheric conditions and particles. The science behind sunsets involves the scattering of light. As sunlight passes through the atmosphere, shorter blue wavelengths scatter more than the longer red wavelengths. This scattering effect is why sunsets often appear more colorful than sunrises, as the atmosphere is typically clearer in the evening.