Aurora vs Hamedan

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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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Hamadān (pronounced [hæmedɒːn]) or Hamedān (Persian: همدان‎, Hamedān) (Old Persian: Haŋgmetana, Ecbatana) is the capital city of Hamadan Province of Iran. At the 2016 census, its population was 676,105 in 210,775 families.Hamedan is believed to be among the oldest Iranian cities. It is possible that it was occupied by the Assyrians in 1100 BCE; the Ancient Greek historian, Herodotus, states that it was the capital of the Medes, around 700 BCE. Hamedan has a green mountainous area in the foothills of the 3,574-meter Alvand Mountain, in the midwest part of Iran.

The city is 1,850 meters above sea level. The special nature of this old city and its historic sites attract tourists during the summer to this city, located approximately 360 kilometres (220 miles) southwest of Tehran. The major sights of this city are the Ganj Nameh inscription, the Avicenna monument and the Baba Taher monument. The majority of the population is Persian; however, there is a considerable Azerbaijani minority.

Source: Wikipedia