Aurora vs Mulhouse

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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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Mulhouse (pronounced [myluz]; Alsatian: Milhüsa or Milhüse, [mɪlˈyːzə]; German: Mülhausen; meaning mill house) is a subprefecture of the Haut-Rhin department in the Grand Est region of Eastern France, close to the Swiss and German borders. With a population of 109,443 in 2017 in the commune and 285,121 inhabitants in 2016 in the urban area, it is the largest city in Haut-Rhin and second largest in Alsace after Strasbourg. Mulhouse is the principal commune of the 39 communes which make up the communauté d'agglomération of Mulhouse Alsace Agglomération (m2A, population 272,712).

Mulhouse is famous for its museums, especially the Cité de l'Automobile (also known as the Musée national de l’automobile, 'National Museum of the Automobile') and the Cité du Train (also known as Musée Français du Chemin de Fer, 'French Museum of the Railway'), respectively the largest automobile and railway museums in the world. An industrial town nicknamed "the French Manchester", Mulhouse is also the main seat of the Upper Alsace University, where the secretariat of the European Physical Society is found.

Source: Wikipedia