Venus Belt: Due to atmospheric scattering, the atmosphere absorbs the blue light in the sunlight and scatters it in all directions, forming a blue sky, but allows red light to pass through. When the sun is near the horizon, the red light passes through the atmosphere and is scattered again, causing the light to scatter backwards. Finally, a piece of sky just above the shadow of the earth is dyed with rose color. This rose-colored light belt is called the "Venus Belt", also known as the "Anti-Twilight Arc". - "Starry Sky Atlas"
Interested fairies can search for pictures, very beautiful ~