Aurora Aurora An aurora (plural: auroras or aurorae), sometimes referred to as polar lights, northern lights (aurora borealis) or southern lights (aurora australis), is a natural light display in the Earth's sky, predominantly seen in the high-latitude regions (around the Arctic and Antarctic). Auroras are produced when the magnetosphere is sufficiently disturbed by the solar wind that the trajectories of charged particles in both solar wind and magnetospheric plasma, mainly in the form of electrons and protons, precipitate them into the upper atmosphere (thermosphere/exosphere) due to Earth's magnetic field, where their energy is lost. The resulting ionization and excitation of atmospheric
Aurora Borealis Express for transportation on the train, and car transporting carriages are added to the formation as required. The northbound train (train 269) and the southbound train (train 270) both operate on varying days of the week, depending upon the time of year, as passenger demand is variable, and somewhat seasonal. Aurora Borealis Express The Aurora Borealis Express is an overnight express train operating between Helsinki, Finland, and Kolari in Lapland. Sleeping births are available on the train, and a restaurant car serves evening meals and breakfast. The train operates via Tampere and Oulu, with stops at both cities. The service is