Aurora vs Chiang Mai

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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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Chiang Mai (, from Thai: เชียงใหม่ [tɕʰīəŋ màj] (listen), Northern Thai: ᨩ᩠ᨿᨦ ᩲᩉ᩠ᨾ᩵ [t͡ɕīəŋ.màj] (listen)), sometimes written as Chiengmai or Chiangmai, is the largest city in northern Thailand and the capital of Chiang Mai Province. It is 700 km (435 mi) north of Bangkok near most of the highest mountains in the country (because it is located near the Himalayas), including Doi Suthep and Doi Inthanon (which is the tallest mountain in Thailand). Chiang Mai (meaning "New City" in Thai) was founded in 1296 as the new capital of Lan Na, succeeding the former capital, Chiang Rai. The city's strategic location on the Ping River (a major tributary of the Chao Phraya River) and its proximity to major trading routes contributed to its historic importance.Although the city (thesaban nakhon, "city municipality") of Chiang Mai only officially covers most parts of the Mueang Chiang Mai District, with a population of 127,000, the city's sprawl extends into several neighboring districts.

The Chiang Mai metropolitan area has a population of nearly one million people, which is more than half of the total population of Chiang Mai Province. The city is subdivided into four khwaeng (electoral wards): Nakhon Ping, Srivijaya, Mengrai, and Kawila. The first three are on the west bank of the Ping River, and Kawila is on the east bank. Nakhon Ping District includes the northern part of the city. Srivijaya, Mengrai, and Kawila consist of the western, southern, and eastern parts, respectively. The city center—within the city walls—is mostly within Srivijaya ward.

Source: Wikipedia