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Pervouralsk | |
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State | |
Country | |
Capital | |
Population | 125495 |
Pervouralsk (Russian: Первоура́льск, lit. the first in the Urals) is a city in Sverdlovsk Oblast, Russia, located on the Chusovaya River (Kama's tributary) 39 kilometers (24 mi) west of Yekaterinburg, the administrative center of the oblast.
Aurora | |
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State | Ontario |
Country | Canada |
Capital | |
Population | 55445 |
An aurora (plural: auroras or aurorae), sometimes referred to as polar lights (aurora polaris), northern lights (aurora borealis), or southern lights (aurora australis), is a natural light display in the Earth's sky, predominantly seen in high-latitude regions (around the Arctic and Antarctic).
Auroras are the result of disturbances in the magnetosphere caused by solar wind. These disturbances are sometimes strong enough to alter the trajectories of charged particles in both solar wind and magnetospheric plasma. These particles, mainly electrons and protons, precipitate into the upper atmosphere (thermosphere/exosphere).
Orléans (UK: ; US: , French: [ɔʁleɑ̃] (listen)) is a prefecture and commune in north-central...
Brno ( BUR-noh, Czech: [ˈbr̩no] (listen); German: Brünn [bʁʏn]) is a city in the South Moravian...
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