Aurora vs Merced

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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

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Merced (Spanish for "Mercy") is a city in, and the county seat of, Merced County, California, United States, in the San Joaquin Valley. As of 2019, the city had a population of 83,676. Incorporated on April 1, 1889, Merced is a charter city that operates under a council-manager government. It is named after the Merced River, which flows nearby. Merced, known as the "Gateway to Yosemite," is less than two hours by automobile from Yosemite National Park to the east and Monterey Bay, the Pacific Ocean, and multiple beaches to the west.

The community is served by the passenger rail service Amtrak, a minor, heavily subsidized airline through Merced Regional Airport, and three bus lines. It is approximately 110 miles (180 km) from Sacramento, 130 miles (210 km) from San Francisco, 45 miles (72 km) from Fresno, and 270 miles (430 km) from Los Angeles. In 2005, the city became home to the 10th University of California campus, University of California, Merced (UC Merced), the first research university built in the U.S. in the 21st century.

Source: Wikipedia