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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

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Wiki User

โˆ™ 2018-01-11 07:57:08
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Rhythm Of The Rain

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โˆ™ 2021-03-04 08:36:31
because of cloud
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Nikolaos Tziolas

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โˆ™ 2021-05-24 06:21:05
ฮ‘ฯ…ฯ„ฯŒ ฮดฮตฮฝ ฯ„ฮฟ ฮฎ
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minemax

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โˆ™ 2021-12-05 10:25:44
due to the fact that ozone atoms absorb all the colors of the spectrum except blue, it is reflected and gets into our eyes
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frenzyhome

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โˆ™ 2021-06-20 08:35:14

Thus, as sunlight of all colors passes through air, the blue part causes charged particles to oscillate faster than does the red part. ... More of the sunlight entering the atmosphere is blue than violet, however, and our eyes are somewhat more sensitive to blue light than to violet light, so the sky appears blue.

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Abbigail Waelchi

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โˆ™ 2021-06-21 14:05:32
awsome thanks

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Rose anndrew

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โˆ™ 2021-09-02 10:58:10

Nikon Chakma ∙

When the Sun's light reaches the Earth's atmosphere it is scattered, or deflected, by the tiny molecules of gas (mostly nitrogen and oxygen) in the air. Because these molecules are much smaller than the wavelength of visible light, the amount of scattering depends on the wavelength. This effect is called Rayleigh scattering, named after Lord Rayleigh who first discovered it.When the Sun's light reaches the Earth's atmosphere it is scattered, or deflected, by the tiny molecules of gas (mostly nitrogen and oxygen) in the air. Because these molecules are much smaller than the wavelength of visible light, the amount of scattering depends on the wavelength. This effect is called Rayleigh scattering, named after Lord Rayleigh who first discovered it.

Shorter wavelengths (violet and blue) are scattered the most strongly, so more of the blue light is scattered towards our eyes than the other colours. You might wonder why the sky doesn't actually look purple since the violet light is scattered even more strongly than blue. This is because there isn't as much violet in sunlight to start with, and our eyes are much more sensitive to blue.

The blue light that gives the sky its colour, is sufficiently bright to make all the stars that we see at night disappear since the light they emit

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BushBond ∙

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What are some of the big, or small, questions that we still need to research more in your field? Or just problems that still need to be solved. Whether in particle physics or condensed matter physics and whether basic or applied fields or anything in between. And how does the work that you are doing help us get closer to answering those questions (if you are working in such a direction)?

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Gregory Flood ∙

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∙ 1y ago

Due to Electromagnetic radiation being scattered by the Earth's atmosphere and the inverse proportionality of light's wavelength and frequency. The light that's scattered by our atmosphere is red and blue.

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paras deep ∙

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∙ 1mo ago

Sunlight interacting with the Earth's atmosphere makes the sky blue. In outer space the astronauts see blackness because outer space has no atmosphere.

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jagdeep kumar singh ∙

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∙ 1mo ago

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

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Quantum ∙

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∙ 1y ago

Because during day time our atmosphere scatters red light and bluish appearance is

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Lexi ∙

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∙ 6mo ago

The sky is blue because the sky is really clear and when the sun shines on the ocean it reflex back to the sky so it makes it blue

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Jody Fay

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โˆ™ 2021-09-02 21:06:48
great answer thank youu!
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Marlene Hackett

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โˆ™ 2021-09-03 18:06:04
good answer, tyy

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anita meena

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โˆ™ 2021-05-17 18:07:00

Sunlight reaches Earth's atmosphere and is scattered in all directions by all the gases and particles in the air. Blue light is scattered more than the other colors because it travels as shorter, smaller waves. This is why we see a blue sky most of the time.

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Mina Hyatt

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โˆ™ 2021-05-19 06:05:48
i like this one ?
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Candace Okuneva

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โˆ™ 2021-05-19 20:05:46
idk if your right

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Nikon Chakma

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โˆ™ 2021-07-28 05:03:30

When the Sun's light reaches the Earth's atmosphere it is scattered, or deflected, by the tiny molecules of gas (mostly nitrogen and oxygen) in the air. Because these molecules are much smaller than the wavelength of visible light, the amount of scattering depends on the wavelength. This effect is called Rayleigh scattering, named after Lord Rayleigh who first discovered it.

Shorter wavelengths (violet and blue) are scattered the most strongly, so more of the blue light is scattered towards our eyes than the other colours. You might wonder why the sky doesn't actually look purple since the violet light is scattered even more strongly than blue. This is because there isn't as much violet in sunlight to start with, and our eyes are much more sensitive to blue.

The blue light that gives the sky its colour, is sufficiently bright to make all the stars that we see at night disappear since the light they emit is much dimmer.

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Bruce Rodriguez

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โˆ™ 2021-10-24 15:27:33

Because of seals back then seals were microclinis that affect our earth then those microclinis got close to earth then earths gravity pulled them closer while they were making there way to earth they left a trail of what is know is sky when they came to earth microclinis collided with encylicalsgy then it made like it seals

-Scientis.BR

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Gregory Flood

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โˆ™ 2019-11-12 02:38:30

Due to Electromagnetic radiation being scattered by the Earth's atmosphere and the inverse proportionality of light's wavelength and frequency. The light that's scattered by our atmosphere is red and blue.

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BushBond

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โˆ™ 2019-10-23 12:29:42

What are some of the big, or small, questions that we still need to research more in your field? Or just problems that still need to be solved. Whether in particle physics or condensed matter physics and whether basic or applied fields or anything in between. And how does the work that you are doing help us get closer to answering those questions (if you are working in such a direction)?

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jagdeep kumar singh

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โˆ™ 2021-07-26 19:13:19

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

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paras deep

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โˆ™ 2021-07-11 13:37:44

Sunlight interacting with the Earth's atmosphere makes the sky blue. In outer space the astronauts see blackness because outer space has no atmosphere.

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