Friday, September 16, 2011

Why is the Moon yellow?



Yesterday when i was on my way home, was lookout the window in the car and saw a really beautiful scene where i've never seen before which is a very bright yellow Moon in the sky. Have you ever seen this before??

I don't know about you but i've never seen this before and it arouse my curiosity very much and started asking questions.



After a few explanations i've gotten, I'm still not satisfied neither do i understand why does the Moon reflect bright yellow instead of white like it usually does, i came back and googled it and found a solid scientific answer that i am so satisfied with!


" The reason why we will see a yellow Moon in the sky is because the effect is caused by the atmosphere of the earth. The reason for the orange coloris due to the scattering of light by the atmosphere. When the moon is near the horizon, the moonlight must pass through much more atmosphere than when the moon is directly overhead. By the time the moonlight reaches your eyes, the blue, green, and purple pieces of visible light have been scattered away by air molecules. That's why you only see yellow, orange, or red.The moon can have an orange color at any time of the year. Sometimes the moon appears orange even when it's directly overhead. This occurs when there's a lot of dust, smoke, or pollution in the atmosphere. The size of those particles will determine the type of color you will see.


The particles in the atmosphere scatter certain wavelengths of light, and permit other wavelengths to get through directly. When the Moon is low in the sky, you’re seeing its light go through the most atmosphere. Light on the blue end of the spectrum is scattered away, while the red light isn’t scattered. This is why the Moon looks more red. As it goes higher in the sky, the Moon is obscured by less and less atmosphere, so it turns more yellow – the same thing happens to the Sun as it rises in the sky. "




So now I got it why at times the Moon changes color! I would love to know when can i see a Orange Moon appear or maybe blue?

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