Question

why sky is looking blue?​

Answer 1

Answer:

because the colour blue only got absorbed and other colours are scattered

Answer 2

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Blue light is scattered in all directions by the tiny molecules of air in Earth's atmosphere. Blue is scattered more than other colors because it travels as shorter, smaller waves. This is why we see a blue sky most of the time. Closer to the horizon, the sky fades to a lighter blue or white.

I hope its help for you!