Szczecin vs Aurora

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Szczecin (UK: SHCHETCH-in, US: -⁠een, shchet-SEEN, Polish: [ˈʂt͡ʂɛt͡ɕin] (listen); German: Stettin [ʃtɛˈtiːn] (listen); Swedish: Stettin [stɛˈtiːn]; known also by other alternative names) is the capital and largest city of the West Pomeranian Voivodeship in northwestern Poland. Located near the Baltic Sea and the German border, it is a major seaport and Poland's seventh-largest city. As of December 2019, the population was 401,907.Szczecin is located on the river Oder, south of the Szczecin Lagoon and the Bay of Pomerania. The city is situated along the southwestern shore of Dąbie Lake, on both sides of the Oder and on several large islands between the western and eastern branches of the river. Szczecin is adjacent to the town of Police and is the urban centre of the Szczecin agglomeration, an extended metropolitan area that includes communities in the German states of Brandenburg and Mecklenburg-Vorpommern. The city's recorded history began in the 8th century as a Lechitic Pomeranian stronghold, built at the site of the Ducal castle. In the 12th century, when Szczecin had become one of Pomerania's main urban centres, it lost its independence to Piast Poland, the Duchy of Saxony, the Holy Roman Empire and Denmark.

At the same time, the House of Griffins established themselves as local rulers and the population was Christianized. After the Treaty of Stettin in 1630, the town came under the control of the Swedish Empire and became in 1648 the Capital of Swedish Pomerania until 1720, when it was acquired by the Kingdom of Prussia and then the German Empire. Following World War II Stettin became part of Poland in accordance with the Potsdam Agreement, resulting in the almost complete expulsion of the pre-war German population. Szczecin is the administrative and industrial centre of West Pomeranian Voivodeship and is the site of the University of Szczecin, Pomeranian Medical University, Maritime University, West Pomeranian University of Technology, Szczecin Art Academy, and the see of the Szczecin-Kamień Catholic Archdiocese. From 1999 onwards, Szczecin has served as the site of the headquarters of NATO's Multinational Corps Northeast. Szczecin was a candidate for the European Capital of Culture in 2016.

Source: Wikipedia

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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).

The resulting ionization and excitation of atmospheric constituents emit light of varying color and complexity. The form of the aurora, occurring within bands around both polar regions, is also dependent on the amount of acceleration imparted to the precipitating particles. Precipitating protons generally produce optical emissions as incident hydrogen atoms after gaining electrons from the atmosphere. Proton auroras are usually observed at lower latitudes.

Source: Wikipedia