Please explain me why the sky is blue
The sky appears blue because of the way our atmosphere interacts with sunlight. Sunlight is made up of many different colors of light, which are all different wavelengths. When sunlight enters our atmosphere, it collides with the gases and particles in the air, causing the light to scatter in all directions.

The shorter blue wavelengths of light are scattered more easily than the other colors, which is why we see the sky as blue. In fact, if you look at the sun directly during sunrise or sunset, the light has to travel through more of the Earth's atmosphere to reach your eyes, causing the blue light to scatter even more, and making the sky appear red or orange.

It's also worth noting that the color of the sky can vary depending on location, time of day, and weather conditions. For example, on a cloudy day, the sky may appear gray or white, while during a sunrise or sunset, the sky can appear pink, orange, or red.