Aurora vs Volgograd

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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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Volgograd (Russian: Волгогра́д), formerly Tsaritsyn (Цари́цын) (1589–1925), and Stalingrad (Сталингра́д) (1925–1961), is the largest city and the administrative centre of Volgograd Oblast, Russia. The city lies on the western bank of the Volga, covering an area of 859.4 square kilometres (331.8 square miles), with a population of over 1 million residents. Volgograd is the fifteenth-largest city in Russia, the second-largest city on the Southern Federal District, and the fourth-largest city on the Volga. The city was founded as the fortress of Tsaritsyn in 1589. By the nineteenth century, Tsaritsyn became an important river-port and commercial centre, leading to its population expanding rapidly. During the Russian Civil War, Tsaritsyn came under Soviet control. On April 10, 1925, the city was renamed Stalingrad in honor of Joseph Stalin.

During World War II, the Axis forces attacked the city, leading to the Battle of Stalingrad, one of the largest and bloodiest battles in the history of warfare. On 10 November 1961, Nikita Khrushchev's administration changed the name of the city to Volgograd. After the dissolution of the Soviet Union, the city became the administrative centre of Volgograd Oblast. Known locally as the "Hero City", Volgograd today is the site of The Motherland Calls, an 85-meter high statue dedicated to the heroes of the battle, which is the tallest statue in Europe, as well as the tallest statue of a woman in the world. The city has many tourist attractions, such as museums, sandy beaches, and a self-propelled floating church. Volgograd was one of the host cities of the 2018 FIFA World Cup.

Source: Wikipedia