, Birds Wallpapers ,Sad Poetry Wallpapers,: sky cloud wallpapers hd

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The actual sky (or perhaps heavenly dome) is usually anything that sits across the top of the World, including the atmosphere in addition to exterior space.In the field of astronomy, the heavens is usually named the celestial field. This specific is usually looked at from Earth's surface as an imaginary dome where the sun, stars, planets, and the moon are seen to be traveling. The celestial sphere is conventionally divided into regions called constellations. Commonly, the concept of a sky is used informally because the point of view from the Earth's surface; however, the meaning and usage can vary. In some cases, such as in discussing the weather, the sky refers to only the lower, more dense portions of the atmosphere.During daylight, the sky appears to be blue because air scatters blue sunlight more than it scatters red. At night, the sky appears to be a mostly dark surface or region scattered with stars. During the day, the Sun can be seen in the sky unless obscured by clouds. In the night sky (and some degree during the day) the moon, planets and stars are visible in the sky.
Some of the natural phenomena seen in the sky are clouds, rainbows, as well as aurorae. Fast and rain can also be observed in the sky during storms. Birds, insects, aircraft, and kites are often considered to help take flight in the sky.
Due to human activities, smog during the day and contamination during the night tend to be noticed earlier mentioned huge urban centers.

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, Birds Wallpapers ,Sad Poetry Wallpapers,: sky cloud wallpapers hd

, Birds Wallpapers ,Sad Poetry Wallpapers,: sky cloud wallpapers hd