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.
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A clear cloudless daytime 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 at sunset, we see red and orange colors because the blue light has been scatte...
http://wiki.answers.com/Q/Why_is_the_sky_Blue
Why is the Sky Blue? Learn about the atmosphere and how light scattering makes the sky look blue. Plus, get great science projects to do. ... On a clear sunny day, the sky above us looks bright blue. In the evening, the sunset puts on a brilliant show of reds, pinks and oranges. Why is the sky blue? What makes the sunset red?
www.sciencemadesimple.com/sky_blue.html www.sciencemadesimple.com/sky_blue.html
Why is the sky blue is a question discussed including funny answers to scientific inquiry and silly explanations to hypotheses. ... Funny you should ask, this blue sky is science's way of saying, "How did this happen?" Earth science may not have all the answers yet, but we do!
www.why-is-the-sky-blue.tv/ www.why-is-the-sky-blue.tv/
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When rays leave the sun, they are white. As these white rays enter the atmosphere, the molecules in the air react with the white spectrum of the rays. As the light moves through the atmosphere, it bumps into gas molecules. These molecules...
http://www.ehow.com/how-does_4910121_why-sky-blue-sun-y...
Diffuse sky radiation - Wikipedia, the free encyclopedia
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Diffuse sky radiation is solar radiation reaching the Earth's surface after having been scattered from the direct solar beam by molecules or suspensoids in the atmosphere. It is also called skylight...
en.wikipedia.org/wiki/Diffuse_sky_radiation
This is the original, linear version of my blue-sky explanation (apart from cosmetic changes, and some recent small changes in phrasing). The new version serves up essentially the same content in smaller chunks linked to a simpler overview, and may be more comprehensible to non-scientists;
world.std.com/~mmcirvin/bluesky.html world.std.com/~mmcirvin/bluesky.html
; Zoom Astronomy; Why is the sky blue?; Sunlight is made up of all the colors of the rainbow: red, orange, yellow, green, blue, and violet. The gas molecules in the atmosphere interact with the sunlight before the light reaches our eyes.
www.enchantedlearning.com/subjects/astronomy/planets/ea... www.enchantedlearning.com/subjects/astronomy/planets/earth/Skyblue.shtml
The sky appears blue to us on a clear day, because the atoms of nitrogen and oxygen in the atmosphere separate the suns white light into its many colors, and scatter them throughout the atmosphere. ... The wavelength of the blue light scatters better than the rest, ... When gazing at the sky, the red cones respond to the...
www.coolquiz.com/trivia/explain/docs/sky.asp www.coolquiz.com/trivia/explain/docs/sky.asp
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Here is s­omething interesting to think about: When y­ou look at the nighttime sky, it's black, with the stars and the moon forming points of light on that black background. So why is it that, during the day, the sky doesn't remain black ...
http://science.howstuffworks.com/sky.htm