Sky - online puzzles

Sky

The sky is an unobstructed view upward from the surface of the Earth. It includes the atmosphere and outer space. It may also be considered a place between the ground and outer space, thus distinct from outer space.

In the field of astronomy, the sky is also called the celestial sphere. This is an abstract sphere, concentric to the Earth, on which the Sun, Moon, planets, and stars appear to be drifting. The celestial sphere is conventionally divided into designated areas called constellations.

Usually, the term sky informally refers to a perspective from the Earth's surface; however, the meaning and usage can vary. An observer on the surface of the Earth can see a small part of the sky, which resembles a dome (sometimes called the sky bowl) appearing flatter during the day than at night. In some cases, such as in discussing the weather, the sky refers to only the lower, denser layers of the atmosphere.

The daytime sky appears blue because air molecules scatter shorter wavelengths of sunlight more than longer ones (redder light). The night sky appears to be a mostly dark surface or region spangled with stars. The Sun and sometimes the Moon are visible in the daytime sky unless obscured by clouds. At night, the Moon, planets, and stars are similarly visible in the sky.

Some of the natural phenomena seen in the sky are clouds, rainbows, and aurorae. Lightning and precipitation are also visible in the sky. Certain birds and insects, as well as human inventions like aircraft and kites, can fly in the sky. Due to human activities, smog during the day and light pollution during the night are often seen above large cities.

SurvEsto online puzzleCherry Tree online puzzlelandscape online puzzleselective focus photography of horses online puzzleCrossing sliding puzzle onlineriver with gray rocks near mountain covered in snow online puzzlegreen and brown mountains sliding puzzle onlineGrand Canyon West, West Rim, Arizona sliding puzzle onlinePeru ............................. online puzzleblue and white string lights on street online puzzlenapali-Kauai sliding puzzle onlinepeople walking near beige concrete building during daytime online puzzlegreen grass field near mountain under blue sky online puzzleman in red shirt and black pants online puzzlegreen grass field during sunset sliding puzzle onlinesilhouette of people on beach during sunset online puzzlecity skyline under white sky during daytime sliding puzzle onlinebrown wooden dock over blue sea during daytime online puzzlesnow covered mountain during daytime sliding puzzle onlinegreen trees beside river under blue sky during daytime online puzzlewhite and brown boat on body of water near green mountain online puzzlegreen trees on mountain during daytime sliding puzzle onlinewhite and brown mountains near body of water under blue sky online puzzlebrown and gray concrete building under blue sky sliding puzzle onlinewhite and black concrete building sliding puzzle onlinegreen trees on island surrounded by water online puzzlegreen trees on snow covered ground during daytime online puzzleround red light on dark room online puzzlewoman in brown and white plaid dress sliding puzzle onlineblue and brown bird on brown tree branch during daytime sliding puzzle onlinewhite concrete statue near green trees during daytime sliding puzzle onlineleafless tree on green grass field sliding puzzle onlineIn the Night sliding puzzle onlineJourneying to the tulip online puzzleHorse herd in Wales online puzzleMachu Picchu sliding puzzle onlineGolden cat eye sliding puzzle onlineMarina Bay Sands, Singapore online puzzleold house in Zheravna - a memory from the past online puzzlebrown rock on beach line online puzzlegreen mountains under white clouds during daytime sliding puzzle onlineshallow focus photography of video camcorder sliding puzzle onlinegreen trees beside river during daytime sliding puzzle onlinered ferrari sports car on road during daytime online puzzlesilhouette of people sitting on rock under starry night sliding puzzle onlineferris wheel on dock during sunset sliding puzzle onlinewhite and brown concrete building near body of water online puzzlebody of water under blue sky during daytime online puzzle
Copyright 2024 slidingtiles.com All rights reserved.