Question

Why does the sky appear blue?

Answer 1

When you look at an arbitrary point of the sky, but in an other direction away from the sun, you will only see the light that has been redirected because of the atmosphere into our sight. This happens much more often for a blue light rather than red, therefore the sky becomes blue in our view. However, there is also a violet light that is scattered even a little bit more strongly as opposed to blue.

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Answer 2

Hello,

Colors that we see in the sky, generally, are retrieved from the light of the sun. In the bright day-time, we see a blue sky since the sun let out its lights. But, why blue? This is because, blue light is scattered throughout the sky from molecules more than all the other colors such as red. And, when the sun begins to set, the blue light slowly fades away which makes the red and orange colors stronger and visible to what we see. 

Hope I've helped, let me know if you need anything else! :)

              - Dotz