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The sun's rays hit the Earth's atmosphere, where the light is scattered by nitrogen and oxygen molecules in the air. The blue wavelength of this light is affected more than the red and green wavelengths, causing the surrounding air to appear blue.

spaceplace.nasa.gov/blue-sky/en

blue sky and clouds illustration. The light from the sun looks white. But it is really made up of all the colors of the rainbow. A prism separates white light into the ...

math.ucr.edu/home/baez/physics/General/BlueSky/blue_sky.html

A clear cloudless day-time sky is blue because molecules in the air scatter blue light from the sun more than they scatter red light. When we look towards the sun  ...

www.physics.org/article-questions.asp?id=108

After days of rain, a patch of blue sky is a sight for sore eyes. ... So, when the Sun is high in the sky, blue light is scattered in all directions as sunlight passes ...

www.ask.com/youtube?q=Why+Is+the+Sky+Blue%3F&v=x0996ts017U
Sep 9, 2013 ... As sunlight passes through the atmosphere, particles in the air scatter blue light more efficiently than any other color in the light spectrum, ...

www.sciencemadesimple.com/sky_blue.html

Learn about the atmosphere and how light scattering makes the sky look blue. MIT used parts ... On a clear sunny day, the sky above us looks bright blue. In the  ...

scijinks.gov/blue-sky

It's so obvious that the sky is blue, you might think the reasons would be just as ... we do see green and yellow in the sky, as well as blue, violet, orange, yellow, ...

www.livescience.com/32511-why-is-the-sky-blue.html

Jun 9, 2014 ... We see a blue sky, because of the way the atmosphere interacts with sunlight. White light, including sunlight, is made up of many different ...

science.howstuffworks.com/nature/climate-weather/atmospheric/sky.htm

The sky is blue because of the way the Earth's atmosphere scatters light from the sun. Find out what makes the sky blue in this article.

www.scientificamerican.com/article/why-is-the-sky-blue

To understand why the sky is blue, we need to consider the nature of sunlight and how it interacts with the gas molecules that make up our atmosphere. Sunlight ...