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Why is the Sky Blue and the Sun Yellow?

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Laura Suen

Guest Author

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2455 Why is the Sky Blue and the Sun Yellow?
Sunset in Acapulco, Mexico by By Arturo Mann via Wikimedia Commons. CC-BY-SA-3.0

Ever wonder why the sky is blue? In the video below, Minute Physics explains the science of scattering, which is the physical process behind why the sky and sun look a certain way at different times of day.

Scattering is also involved in other phenomena, such as green flashes that can be viewed for a second or two immediately following a sunset.

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