Aurora vs Salzburg

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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

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Salzburg (Austrian German: [ˈsaltsbʊʁk]; German: [ˈzaltsbʊʁk] (listen); literally "Salt Fortress"; Bavarian: Soizbuag) is the capital city of the State of Salzburg and fourth-largest city in Austria. In 2020, it had a population of 156,872.The town is located on the site of the former Roman settlement of Iuvavum. Salzburg was founded as an episcopal see in 696 and became a seat of the archbishop in 798. Its main sources of income were salt extraction and trade and, at times, gold mining. The fortress of Hohensalzburg, one of the largest medieval fortresses in Europe, dates from the 11th century. In the 17th century, Salzburg became a centre of the Counter-Reformation, where monasteries and numerous Baroque churches were built.

Salzburg's historic centre (German: Altstadt) is thus renowned for its Baroque architecture and is one of the best-preserved city centres north of the Alps, with 27 churches. It was listed as a UNESCO World Heritage Site in 1996. The city has three universities and a large population of students. Tourists also visit Salzburg to tour the historic centre and the scenic Alpine surroundings. Salzburg was the birthplace of the 18th-century composer Wolfgang Amadeus Mozart. Because of its history, culture, and attractions, Salzburg has been labeled Austria's "most inspiring city."

Source: Wikipedia