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 an aurora formed above the port city of [[Ostia Antica|Ostia]] that was so intense and red that a cohort of the army, stationed nearby for fire duty, galloped to the rescue. It has been suggested that [[Pliny the Elder]] depicted the aurora borealis in his "[[Natural History (Pliny)|Natural History]]", when he refers to "trabes", "chasma", 'falling red flames' and 'daylight in the night'. [[File:Aurora australis.jpg|thumb|The Aboriginal Australians associated auroras (which are mainly low on the horizon and predominantly red) with fire.]] In the traditions of [[Aboriginal Australians]], the Aurora Australis is commonly associated with fire. For example, the [[Gunditjmara people]]