Why sky is always Blue ?

sky blue because when white light of sun gets our atmosphere, blue part of light becomes scattered, , light goes everywhere , therefore see sky blue unless it's night, in there no sun, , therefore no light scattered, sky invisible.

sunsets , sunrises yellow, orange, , red because light of sun has go through more atmosphere, blue light scatters away before reaches our eyes. other colors scatter, leaving last 3 colors of spectrum. red, orange, , yellow.

sky blue there specific reason?

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