Why the sky is blue?

Why is the color of the sky blue is not purple? Many people have a question like this. But what was the color of the sky blue? The light velor length of the purple light is less than the blue light. So the sky is about to be purple. But for what reason we see the sky blue? The Earth has the sun's blue color spread in the atmosphere of the atmosphere. We know that the sun's white light is composed of seven colors of light. These are violet, blue, asparagus, green, yellow, orange and red. The blue light dispersed along with the sun's white light entering at that particular level of the Sun. That area looks so blue on earth. So we think the sky is blue. When we see the earth from outer space, its sky is already seen. It looks like blue sphere. So the earth is called blue planet.