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  1. Red light has long wavelengths, while blue light has short wavelengths. Light bounces off of air molecules in the Earth's atmosphere, scattering in all directions. Blue light is scattered more than other colors of light because of its shorter, smaller waves.

    • Visible Light

      Blue and purple light have short waves, around 400 nm....

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      But what is air quality and why does it change? What's in...

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      Without the atmosphere, temperatures would be well below...

    • It's Easy to See That The Sky Is Blue. Have You Ever Wondered Why?
    • What Makes A Red Sunset?
    • Is The Sky Blue on Other Planets, Too?

    A lot of other smart people have, too. And it took a long time to figure it out! The light from the Sun looks white. But it is really made up of all the colors of the rainbow. When white light shines through a prism, the light is separated into all its colors. A prism is a specially shaped crystal. If you visited The Land of the Magic Windows, you ...

    As the Sun gets lower in the sky, its light is passing through more of the atmosphere to reach you. Even more of the blue light is scattered, allowing the reds and yellows to pass straight through to your eyes.

    It all depends on what’s in the atmosphere! For example, Mars has a very thin atmosphere made mostly of carbon dioxide and filled with fine dust particles. These fine particles scatter light differently than the gases and particles in Earth’s atmosphere. Photos from NASA’s rovers and landers on Mars have shown us that at sunset there is actually th...

  2. 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 at sunset, we see red and orange colours because the blue light has been scattered out and away from the line of sight.

  3. Sep 8, 2023 · We've all probably looked up and wondered why the sky is blue instead of, say, brown. The sky is blue because of the way Earth's atmosphere scatters light from the sun.

    • Nicholas Gerbis
  4. May 25, 2017 · The real reason the sky is blue because gas and dust in the atmosphere scatter blue light. You’ve seen pictures of the sun taken from space, so you know it looks white or faintly yellow. You know the air in the atmosphere mainly looks clear and colorless, so you may be wondering why the sky looks blue.

  5. The blue-sky phenomenon is due to the Rayleigh scattering (elastic scattering) of light. Blue color gets scattered 10 times more than the red side of the spectrum. That is the reason we see blue color all over the sky.

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  7. Aug 25, 2022 · In outer space, above the Earth's atmosphere, the sky looks black even in sunlight. That's one of the most striking phenomena experienced by travelers on Blue Origin's suborbital flights.

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