Ciudad del Este vs Aurora

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Ciudad del Este (Spanish pronunciation: [sjuˈðað ðel ˈeste], Spanish for Eastern City; often shortered as CDE) is the second-largest city in Paraguay and capital of the Alto Paraná Department, situated on the Paraná River. It is located 327 km from Asunción, the capital, and is adjacent to the border with Brazil, to which it is connected by the Friendship Bridge on the Paraná River. It is the largest city within the Triple Frontier region, which borders Foz do Iguaçu, Brazil and Puerto Iguazú, Argentina. The Itaipú Dam, one of the largest hydroelectric power plants in the world, is near Ciudad del Este, as is the Iguazu Falls.

Ciudad del Este is a commercial city, and is one of the largest free-trade zones in the world. Its tax-free status attracts many Brazilians and Argentines to the city.Ciudad del Este has consulates for Argentina, Brazil, Mexico, Peru, Uruguay, Spain, France, Germany, Italy, Slovakia, Syria, Turkey, and Taiwan.The city is home to Club Atlético 3 de Febrero, whose home ground Estadio Antonio Aranda was used for the 1999 Copa América and is Paraguay's third biggest football stadium.The city is the seat of the Roman Catholic Diocese of Ciudad del Este.

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