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Bielsko-Biała | |
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State | Silesian Voivodeship |
Country | Poland |
Capital | |
Population | 173699 |
Bielsko-Biała [ˈbʲɛlskɔ ˈbʲawa] (listen) (Czech: Bílsko-Bělá; German: Bielitz-Biala; Hebrew: בילסקו ביאלה, Silesian: Biylsko-Bioło) is a city in southern Poland with a population of approximately 170,663 as of 2019 and an area of 124.5 km2 (48.1 sq mi). The city is a centre of the Bielsko Urban Agglomeration with 325,000 inhabitants and is an industrial (automotive), transport, and tourism hub of the Bielsko Industrial Region.
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).