Bechar vs Aurora

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Béchar (Arabic: بشار‎) is the capital city of Béchar Province, Algeria. It is also a commune, coextensive with Béchar District, of Béchar Province. In 2008 the city had a population of 165,627, up from 134,954 in 1998, with an annual growth rate of 2.1%. The commune covers an area of 5,050 square kilometres (1,950 sq mi).Before coal was found here in 1907, Béchar was a small populated town prior to its annexation to French Algeria on 1904. It has then thrived on the activity of the coal mines until petroleum production seized the market.

Leatherwork and jewellery are notable products of Béchar. Dates, vegetables, figs, cereals and almonds are produced near Béchar. There are bituminous coal reserves near Béchar, but they are not exploited to their greatest potential because of transportation costs are too high relative to that from the oil and gas fields of eastern Algeria. The city was once the site of a French Foreign Legion post. The Kenadsa longwave transmitter, whose masts are the tallest structures in Algeria at 357 metres (1,171 ft), is found near Béchar.

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