Chippewa Falls vs Aurora

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Chippewa Falls is a city located on the Chippewa River in Chippewa County in the U.S. state of Wisconsin. The most recent census from 2010 shows that the population is 13,661. Incorporated as a city in 1869, it is the county seat of Chippewa County.The city's name originated from its location on the Chippewa River, which is named after the Ojibwe Native Americans. Chippewa is an alternative rendition of Ojibwe. Chippewa Falls is the birthplace of Seymour Cray, known as the "father of supercomputing", and the headquarters for the original Cray Research.

It is also the home of the Jacob Leinenkugel Brewing Company, the Heyde Center for the Arts, a showcase venue for artists and performers; Irvine Park, and the annual Northern Wisconsin State Fair. Chippewa Falls is 15 miles from the annual four-day music festivals Country Fest and Rock Fest.

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