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Why does the sun appear yellow?

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Answer: Atmosphere scatters blue light

Distance makes it yellowWrong. Distance doesn't change color—wavelength is intrinsic. The sun looks yellow because our atmosphere scatters shorter wavelengths.

Reflection from cloudsWrong. Clouds don't color the sun. Atmosphere scatters blue light away (Rayleigh scattering), leaving yellow-orange wavelengths reaching our eyes.

Atmosphere scatters blue lightCorrect! The sun emits white light (all colors). Earth's atmosphere scatters shorter wavelengths (blue, violet) more than longer ones (red, orange, yellow)—Rayleigh scattering. Blue light scatters across the sky, leaving yellow-orange light in direct sunlight. From space, the sun is white! At sunset, light travels through more atmosphere, scattering even more blue, making it red-orange!

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