Salt Lake City vs Aurora

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Salt Lake City (often shortened to Salt Lake and abbreviated as SLC) is the capital and most populous city of the U.S. state of Utah, as well as the seat of Salt Lake County, the most populous county in Utah. With an estimated population of 200,567 in 2019, the city is the core of the Salt Lake City metropolitan area, which has a population of 1,222,540 (2018 estimate). Salt Lake City is further situated within a larger metropolis known as the Salt Lake City–Ogden–Provo Combined Statistical Area, a corridor of contiguous urban and suburban development stretched along a 120-mile (190 km) segment of the Wasatch Front, comprising a population of 2,606,548 (as of 2018 estimates), making it currently the 22nd largest in the nation. It is the larger of only two major urban areas located within the Great Basin (the other being Reno, Nevada). Salt Lake City is the world headquarters of The Church of Jesus Christ of Latter-day Saints (LDS Church). The city was founded in 1847 by followers of the church, led by Brigham Young, who were seeking to escape persecution they had experienced while living farther east. The Mormon pioneers, as they would come to be known, entered a semi-arid valley and immediately began planning and building an extensive irrigation network which could feed the population and foster future growth. Salt Lake City's street grid system is based on a standard compass grid plan, with the southeast corner of Temple Square (the area containing the Salt Lake Temple in downtown Salt Lake City) serving as the origin of the Salt Lake meridian.

Due to its proximity to the Great Salt Lake, the city was originally named Great Salt Lake City. In 1868, the word "Great" was dropped from the city's name.Immigration of international members of the LDS Church, mining booms, and the construction of the first transcontinental railroad initially brought economic growth, and the city was nicknamed "The Crossroads of the West". It was traversed by the Lincoln Highway, the first transcontinental highway, in 1913. Two major cross-country freeways, I-15 and I-80, now intersect in the city. The city also has a belt route, I-215. Salt Lake City has developed a strong tourist industry based primarily on skiing and outdoor recreation. It hosted the 2002 Winter Olympics. It is known for its politically liberal and diverse culture, which stands at contrast with the rest of the state's conservative leanings. It is the industrial banking center of the United States. It is also the location of several institutions of higher education including the state's flagship research school, the University of Utah. It is categorized as a "Gamma−" global city, according to the Globalization and World Cities Research Network.

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