Northern lights are natural light displays, predominantly seen in the polar regions.
They are produced when electrically charged particles of the solar wind from the
magnetosphere collide with oxygen and nitrogen atoms and ionize them. During the
recombination following shortly afterwards, light is emitted. The term “Northern light” is, strictly
speaking, just a sub category of the phenomenon, which mainly appears in the polar
regions: In the Northern latitude, it is called "Northern lights”, in the Southern latitude, it is
called “Southern lights”. Simplified, it is also referred to as “Polar lights”.