At certain periods of the day, such as sunrise and sunset, the sky may appear pink or reddish. This is a result of “scattering,” an occurrence.
Sunlight interacts with air molecules and particles as it travels through the atmosphere of the Earth. The separation of the spectrum’s colors is brought on by these particles, which scatter light in various ways. The shorter wavelength and easier scattering of blue light account for the daylight appearance of the blue sky.
The sun is lower on the horizon during dawn and sunset, so more of the Earth’s atmosphere must be passed by light before it reaches the observer. The longer bands of red, orange, and pink are left behind as a result of the increased scattering of blue light. The colors of the sunrise or sunset can appear more intensely, giving birth to a stunning pink sky, the more the blue light is scattered.
Dust, pollution, or smoke in the air can also affect the colors of the dawn or sunset, sometimes enhancing or altering the hues of the sky.