Campinas vs Aurora

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Campinas (Portuguese pronunciation: [kɐ̃ˈpinɐs], Plains or Meadows) is a Brazilian municipality in São Paulo State, part of the country's Southeast Region. According to the 2010 Census, the city's population is 1,080,999, making it the fourteenth most populous Brazilian city and the third most populous municipality in São Paulo state.

The city's metropolitan area, Metropolitan Region of Campinas, contains twenty municipalities with a total population of 3,656,363 people.

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