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sky,

apparent dome over the earth, background of the clouds, sun, moon, and stars. The blue color of the clear daytime sky results from the selective scattering of light rays by the minute particles of dust and vapor in the earth's atmosphereatmosphere
[Gr.,=sphere of air], the mixture of gases surrounding a celestial body with sufficient gravity to maintain it. Although some details about the atmospheres of other planets and satellites are known, only the earth's atmosphere has been well studied, the science of
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. The rays with longer wavelengths (the reds and yellows) pass through most readily, whereas the shorter rays (the blues) are scattered. An excess of dust, especially in large particles, causes scattering of many rays besides the blue, and the sky "fades" and becomes whitish or hazy. The sky thus is clearest in winter, in the morning, after a rain, over a mountain, or over the ocean. Leonardo da Vinci experimented with light and attempted an explanation of the sky's blue color. The work on light and its behavior by Sir Isaac Newton, Lord Rayleigh, and other physicists provided explanations of rainbows, sky color, mirages, and other atmospheric phenomena.

What does it mean when you dream about the sky?

The sky usually signifies peace and freedom of expression when it is clear and blue. If cloudy and overcast, the sky may be forecasting sadness and trouble.

sky

[skī]
(astronomy)
In the daytime the apparent blue dome resting on the earth along the horizon circle; at night the blue becomes nearly black.

sky

1. the apparently dome-shaped expanse extending upwards from the horizon that is characteristically blue or grey during the day, red in the evening, and black at night
2. outer space, as seen from the earth
3. weather, as described by the appearance of the upper air
References in periodicals archive ?
On February 3, 1942, the sole Skyrocket suffered a main landing gear collapse under conditions on land far kinder than those aboard any carrier.
A floating player that can be positioned and resized anywhere on a user's screen, Skyrocket is a customizable player for those looking for an online video experience without dedicating the time - or browser window - to the search.
Garrett Geib of the SkyRocket Group explained, "For some time, integrated payments has been a very active field.
With products like the Skyrocket Series that support the G.
Carried aloft beneath a B-29 bomber, the Skyrocket was released at an altitude of 32,000 feet.
Aa Masked group attacked to the police with skyrockets and stones.
BUSH, who has ordered potentially thousands of discharged marines back into active duty, while the number of willing, talented service members discharged under "don't ask, don't tell" skyrockets.
While in the 401(k) pension trust, the value of the employer's securities skyrockets to $100,000.
Although ``safe and sane'' fireworks are not legal in Lancaster, the ``aid and abet'' ordinance would not target people using those -- just people shooting off skyrockets, firecrackers and other devices that fly or explode, which the state defines as dangerous fireworks.
Bearing out researchers' longstanding suspicion of a link between cocaine use and heart attacks, a new study confirms that cocaine users' risk skyrockets within minutes of taking the drug.
MIAMI -- Newspaper Hones in on Condo Market with State-of-the-Art Listing and Advertising Platform as On-line Marketing Skyrockets in Importance -- Millions of Page Views Per Month For Advertisers --
Noting that the Antelope Valley looks like a ``war zone'' on July Fourth from people shooting off skyrockets and other illegal imports from outside California, Smith proposed making it a misdemeanor to ``aid and abet'' illegal fireworks displays -- just as police can cite spectators at illegal street races.