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Sunlight interacting with the Earth's atmosphere makes the sky blue. In outer space the astronauts see blackness because outer space has no atmosphere.
Sunlight consists of light waves of varying wavelengths, each of which is seen as a different color. The minute particles of matter and molecules of air in the atmosphere intercept and scatter the white light of the sun. A larger portion of the blue color in white light is scattered, more so than any other color because the blue wavelengths are the shortest.
When the size of atmospheric particles are smaller than the wavelengths of the colors, selective scattering occurs-the particles only scatter one color and the atmosphere will appear to be that color. Blue wavelengths especially are affected, bouncing off the air particles to become visible.
This is why the sun looks yellow from Earth (yellow equals white minus blue). In space, the sun appears white because there is nothing in between to scatter its white light.
At sunset, the sky changes color because as the sun drops to the horizon, sunlight has more atmosphere to pass through and loses more of its blue wavelengths. The orange and red, having the longer wavelengths and making up more of sunlight at this distance, are most likely to be scattered by the air particles.
The scattering of visible light by atmospheric gases is most correctly called the Tyndall effect, but it is more commonly known to physicists as Rayleigh scattering after Lord Rayleigh, who studied it in more detail a few years later. Rayleigh Scattering is where red, orange, yellow, and green are passed through and blue, indigo, and violet are "scattered" out creating the color.
Whichever direction you look, some of this scattered blue light reaches you. Since you see the blue light from everywhere overhead, the sky looks blue.
(*As for why the sky does not appear violet -- the wavelength most scattered -- see the explanation at the related link below.)
Blue light is scattered in all directions by the tiny molecules of air in Earth's atmosphere. Blue is scattered more than other colors because it travels as shorter, smaller waves. This is why we see a blue sky most of the time.
The sky appears blue to us because of the scattering of the blue light component of the light from the Sun. Some alpine lakes also appear a quite light blue colour for the same reason, light is scattered by tiny suspended flakes of minerals in the water.
Because the water particles in the air split the light and Blue light is dispersed the furthest that's why it creates the illusion the sky is blue
What else can I help you with?
Why is the sky blue at daytime?
The sky appears blue during the day because of the way Earth's atmosphere scatters sunlight. Blue light from the sun is scattered in all directions by the gases and particles in the atmosphere, making the sky appear blue to us.
Why is the sky and water blue?
The sky is blue because of Rayleigh scattering -- blue photons scatter off air molecules to a large extent, while the other colors travel directly in straight lines from the sun, making the sky appear blue and the sun appear yellow (white minus blue). In space, or on the airless moon, the sky is black and sun is white. It is NOT true that oceans look blue due to sky reflection. Water also scatters blue light, so the explanation of its color is largely the same as that for the sky.
Is the sky blue a hypothesis?
No. The sky is just as blue as a blue shirt though. Technically an object, such as a shirt or the sky, is not blue. The object just appears to be blue because it absorbs all other colors of the spectrum and reflects blue back which is the same with any other color seen.
What color is the sky on a clear sunny day?
Blue. :D
Why does the sky appear dark instead of blue to an astronaut?
Because the sky is blue to us by the light being scattered through nitrogen. In space there is no nitrogen for the light to scatter through, therefore the sky around them seems black. Although, when in space if you look at the earth, you can see the blue sky, as there is nitrogen there.
Why the sunset is sky blue?
because the sky is blue
Why is the sky blue Short answer: The sky appears blue because of the way sunlight is scattered by the Earth's atmosphere.?
The sky looks blue because sunlight is scattered by the Earth's atmosphere.
Is the sky blue because of chemical reactions?
No. The sky is blue due to the scattering of light.
Is the sky blue due law of parody?
No i think the sky is blue because the reflection of the ocean or could it be the sky is blue and it reflects on to the ocean?
What does sky blu look like?
The color sky blue is a lighter shade of blue. The color is called sky blue because it is to resemble to same color as the sky. When the sun is out the sky is a beautiful shade of blue.
Is the sky blue because the sea is blue?
No, the sky is blue due to a phenomenon called Rayleigh scattering, where particles in the atmosphere scatter sunlight in all directions. The sea appears blue because it absorbs colors from the sunlight spectrum and reflects blue light.
why is the sky blue in color?
Because the ocean reflect to the sky .
Why the sky seems blue be to you?
the sky seems blue to us, because the suns rays reflect off the earths atmosphere and it produces the sky to be blue.
Bluecolor of sky is because of the phenomenon of?
The sky is blue because various constituents of the atmosphere scatter light selectively, leaving the blue color. The sea is blue because of the same reason, not because of the reflection of the sky. If the sea isn't blue, it is because of plants/bacteria that live in the water and disscolour it.
Can you explain in a pourquoi tale why the sky is blue?
In a pourquoi tale, the sky is blue because it is colored by the tears of a young maiden who cried for her lost love. The sky turned blue from the reflection of her sorrow and longing for her beloved.
What is the superstitious belief of why the sky is blue?
the sky is blue because its means that the sun will raised and we have a good weather
Can youdescribe the sky?
The sky is blue because particles in the air only reflect blue light rays
