human
Why does the color of the sky change throughout the day?
assistant
The sky changes colors throughout the day because the sun is constantly moving across the sky, casting different shadows and lighting up different parts of the atmosphere. As the sun moves higher in the sky during the day, it illuminates more of the blue sky, causing it to appear lighter and bluer. Conversely, as the sun sets and begins to move lower in the sky, it casts a longer shadow over the land, resulting in a darker blue hue.