Jan 13, 2009

Polar Aurora

Aurora (Polar aurora) high in the Earth's magnetic latitude areas. Is a gorgeous light-emitting phenomenon. From the Earth's magnetosphere, or the sun's energy flow of charged particles (solar wind) to enable the upper atmosphere of molecular or atomic excited (or ionized) arising. In addition, the number of sunspots, the Aurora also great frequency. 



   Aurora is a large-scale earth around the discharge process. Charged particles from the sun reach the earth near the part of the Earth's magnetic field along the magnetic force is concentrated to the north and south poles. When they enter the polar regions of the upper atmosphere when atmospheric atoms and molecules and stimulate the collision, resulting in light, the formation of the aurora. Aurora appears time is short half a minute long it will last for half an hour or even more than the speed of mobile Aurora is also some fast and some slow, in the process of moving, ever-changing patterns, but also to attract Aurora the local people! 



 Northern Lights Northern Hemisphere Southern Hemisphere Antarctic Light 



   Aurora most commonly found in the North-South magnetic latitude 67 ° near the ring with the two regions, namely light district known as the Antarctic and the Northern Lights District. The northern hemisphere to Alaska, north Canada, Siberia, the southern tip of Greenland and Iceland and Norway dominated the north coast; and the southern hemisphere are concentrated in the vicinity of Antarctica. It is worth mentioning is: near the North Pole, Alaska, Northern Canada is the best place to watch Aurora, Alaska Fairbanks (Fairbanks) has won the "capital of the Northern Lights" laudatory title, year, there are more than 200 days of the aurora .

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