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Russia (/ˈrʌʃə/; Russian: Россия, tr. Rossiya, IPA: /rɐˈsʲijə/), officially known as both Russia and the Russian Federation (Russian: Российская Федерация, tr. Rossiyskaya Federatsiya, IPA: (rɐˈsʲijskəjə fʲɪdʲɪˈratsɨjə)), is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...

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A cloud is a visible mass of water droplets or frozen ice crystals suspended in the atmosphere above the surface of the Earth or another planetary body. Clouds in the Earth's atmosphere are studied in the nephology or cloud physics branch of meteorology. Two processes, possibly acting together, can lead to air becoming saturated: cooling the air or adding water vapor to the air. Generally, precipitation will fall to the surface; an exception is virga which evaporates before reaching the surface...

Night or nighttime is the period of time when the sun is below the horizon. The opposite of night is day (or "daytime" to distinguish it from "day" as used for a 24-hour period). The start and end times of night vary based on factors such as season, latitude, longitude and timezone. At any given time, one side of the planet Earth is bathed in light from the Sun (the daytime) and the other side of the Earth is in the shadow caused by the Earth blocking the light of the sun...