Is the sky really blue?

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. Closer to the horizon, the sky fades to a lighter blue or white.
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What is the real color of the sky?

As far as wavelengths go, Earth's sky really is a bluish violet. But because of our eyes we see it as pale blue.
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Why are skies not blue?

Despite the atmosphere containing so much air, it does not contain enough air to scatter 100% of the light and therefore act as opaque. We thus see the sky as a whitish-blue semi-transparent layer.
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Can the sky be green?

If this blue scattered light is set against an environment heavy in red light—during sunset for instance—and a dark gray thunderstorm cloud, the net effect can make the sky appear faintly green. In fact, green thunderstorms are most commonly reported in the late afternoon and evening, according to Beasley.
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Is the sky blue or clear?

The sky is blue due to a phenomenon called Raleigh scattering. This scattering refers to the scattering of electromagnetic radiation (of which light is a form) by particles of a much smaller wavelength.
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Neil deGrasse Tyson Explains Why The Sky Is Blue



Is the ocean actually blue?

The ocean is blue because water absorbs colors in the red part of the light spectrum. Like a filter, this leaves behind colors in the blue part of the light spectrum for us to see. The ocean may also take on green, red, or other hues as light bounces off of floating sediments and particles in the water.
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Can the sky be GREY?

A: On hazy days, large particles in the air make the sky appear gray or even white, McRoberts explains. "These larger particles tend to scatter more wavelengths of light in the color spectrum," he says. "Hazy air has a lot of water molecules, and these molecules can scatter light of all wavelengths, not just blue.
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Does color blue exist?

There's no such thing as color.” Blue is nowhere in nature. It is only an imagination. It exists in the light spectrum, in our language and mind.
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What's the rarest color?

They're out there, but not many. Blue is one of the rarest of colors in nature. Even the few animals and plants that appear blue don't actually contain the color.
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What is the rarest color in nature?

According to statistics, there are less than 1 in 10 plants with blue flowers and even fewer animals that are actually blue, making it the rarest color in nature. Practically, there is no true blue pigment in nature.
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What colors can't humans see?

Red-green and yellow-blue are the so-called "forbidden colors." Composed of pairs of hues whose light frequencies automatically cancel each other out in the human eye, they're supposed to be impossible to see simultaneously. The limitation results from the way we perceive color in the first place.
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Why is the sky white instead of blue?

In a cloud, sunlight (which is white) is scattered by millions of relatively large water droplets. These droplets scatter all colors almost equally, meaning that the sunlight continues to remain white. This is why clouds appear white against the background of a blue sky.
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What other colors can the sky be?

The particles and gases in the air scatter visible light all over the atmosphere, and since blue light has a shorter / smaller wave than most of the visible light spectrum, we see the sky as mostly blue during the day. During the evening however, the sky can change colors and become red, orange, yellow, etc.
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What color is the sky when it's going to hail?

If you've watched a thunderstorm during the late afternoon or early evening, you may notice that the sky turns green before it begins to hail. What causes this change in the color of the sky? The effect of the green sky is usually observed with thunderstorms that occur later in the day when the sun angle is lower.
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Why is Caribbean water so clear?

The Caribbean Sea, like other tropical ocean regions, contains warm, clear water. The water is clear due to the absence of plankton and suspended particles.
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Why is the water so clear in the Bahamas?

The reason that the water in the Bahamas and Hawaii is clearer than along the California coast is likely a combination of both of these factors: 1) the sediments in the Bahamas and Hawaii tend to be composed of heavier particles that are not as easily stirred up or suspended, and 2) there tends to be far less ...
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Is the ocean a soup?

Some parts of the ocean do reach temperatures of boiling or above and some forms of life have adapted to live there. Therefore we can infer that parts of the ocean are soup.
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Can the sky be black?

Without an atmosphere the sky appears black, as evidenced by the lunar sky in pictures taken from the moon. But even a black sky has some lightness. At night, the sky always has a faint color, called "skyglow" by astronomers.
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What would happen if the sky was red?

If there are any clouds overhead, the red light illuminates them, creating a spectacular sunrise. When weather moves west to east, a red sky at night means that there are clouds overhead, but clear skies to the west — which tells you that the weather will likely be clearing up.
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Could a planet have a red sky?

Mars has a red sky. But that's cause of the iron content in the soil absorbs other parts of the visible spectrum and reflects back the red part, so the sky looks reddish.
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Why is the sky never green?

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. Closer to the horizon, the sky fades to a lighter blue or white.
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Is the sky blue because of the ocean?

Same reason the sky is blue." In other words, the color of the ocean and the color of the sky are related but occur independently of each other: in both cases, the preferential absorption of long-wavelength (reddish) light gives rise to the blue.
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Why do clouds float?

Clouds are composed primarily of small water droplets and, if it's cold enough, ice crystals. The vast majority of clouds you see contain droplets and/or crystals that are too small to have any appreciable fall velocity. So the particles continue to float with the surrounding air.
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What colors can dogs not see?

Human eyes have three types of cones that can identify combinations of red, blue, and green. Dogs possess only two types of cones and can only discern blue and yellow - this limited color perception is called dichromatic vision.
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Can we imagine a new color?

Basically, we can't see new colours because we have evolved to see three and the mixtures of those three. But why can't we imagine a new colour? You would think, since imagining something in your head doesn't require your eyes, that it would be simple. No cone receptors, no spectrum, just your brain.
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