The Aurora (or Aurora Borealis, ie northern lights or aurora australis, ie southern lights) is an optical phenomenon (more precisely, an electric Meteor), which is caused on impact of charged particles of solar wind on the Earth's atmosphere in the polar regions of Earth. The Northern Lights are usually north and south of 60 ° north latitude 60 ° south latitude observed.
auroras occur when electrically charged particles hit the magnetosphere, mostly electrons but also protons (solar wind) and some heavy ions (oxygen ions) to the upper layers of the atmosphere. There they stimulate the existing air molecules to glow. The impact of a particle causes at the molecular / atomic excitation according to a modified electronic configuration. In a short time later successful end de-excitation light is emitted, generally referred to as fluorescence. Even nuclear weapons tests in high atmospheric layers (400 km) cause such phenomena, such as the Starfish Prime test, the United States on 9 July 1962.
auroras are both in northern latitudes (Northern Lights, or Aurora borealis) and in the southern hemisphere (southern lights, or Aurora Australis). On other planets of the solar system, these phenomena are observed. The precondition is that the planet is a magnetic field and has an atmosphere.
auroras occur when electrically charged particles hit the magnetosphere, mostly electrons but also protons (solar wind) and some heavy ions (oxygen ions) to the upper layers of the atmosphere. There they stimulate the existing air molecules to glow. The impact of a particle causes at the molecular / atomic excitation according to a modified electronic configuration. In a short time later successful end de-excitation light is emitted, generally referred to as fluorescence. Even nuclear weapons tests in high atmospheric layers (400 km) cause such phenomena, such as the Starfish Prime test, the United States on 9 July 1962.
auroras are both in northern latitudes (Northern Lights, or Aurora borealis) and in the southern hemisphere (southern lights, or Aurora Australis). On other planets of the solar system, these phenomena are observed. The precondition is that the planet is a magnetic field and has an atmosphere.
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