Why is the sky blue?

Mom, why is the sky blue?’

Here’s your sim­ple answer mom:

When the dif­fer­ent col­ors of light pass through the atmos­phere, they run into tiny water mol­e­cules. Blue-ish col­ors have short wave­lengths which pass through small mol­e­cules eas­ily. That’s it!

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