Hasselt vs Aurora

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Hasselt (Dutch pronunciation: [ˈɦɑsəlt] (listen)) is a Belgian city and municipality, and capital and largest city of the province of Limburg in the Flemish Region of Belgium. The Hasselt municipality includes the original city of Hasselt, plus the old communes of Sint-Lambrechts-Herk, Wimmertingen, Kermt, Spalbeek, Kuringen, Stokrooie, Stevoort and Runkst, as well as the hamlets and parishes of Kiewit, Godsheide and Rapertingen.

On 31 December 2007 Hasselt had a total population of 71,520 (34,951 men and 36,569 women). Both the Demer river and the Albert Canal run through the municipality. Hasselt is located in between the Campine region, north of the Demer river, and the Hesbaye region, to the south. On a larger scale, it is also situated in the Meuse-Rhine Euroregion.

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