San Luis Obispo vs Aurora

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San Luis Obispo (; SLO ( for short) is a city in the U.S. state of California, located in San Luis Obispo County, approximately 190 miles (310 km) north of Los Angeles and 230 miles (370 km) south of San Francisco. Located in Southern California's Central Coast region, the population of the city was 45,119 at the 2010 census. The population of the county was 269,637 in 2010. Founded in 1772 by Spanish Franciscan Junípero Serra, San Luis Obispo is one of California's oldest European-founded communities.

Serra's original mission was named after the 13th-century saint and bishop Louis of Toulouse. The city, locally referred to as San Luis, SLO, or SLO Town (as its county is also referred to as SLO) is the county seat of San Luis Obispo County and is adjacent to California Polytechnic State University.

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