Why does the sun appear yellow?
Show answer & explanation
Answer: Atmosphere scatters blue light
Distance makes it yellow — Wrong. Distance doesn't change color—wavelength is intrinsic. The sun looks yellow because our atmosphere scatters shorter wavelengths.
Reflection from clouds — Wrong. Clouds don't color the sun. Atmosphere scatters blue light away (Rayleigh scattering), leaving yellow-orange wavelengths reaching our eyes.
Atmosphere scatters blue light ✓ — Correct! 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!
More Astronomy & Space questions
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- Earth's atmosphere slowly leaks to space. Which gas escapes fastest?
- Why is Earth's day getting slightly longer every century?
- Why was Earth's day stuck at 19.5 hours for 1.5 billion years?
- Why might several small units beat one giant Moon reactor?
- Why is fission likelier than fusion for first Moon bases?
