发布时间：2013-04-26 16:58:13 来源：宁波朗阁培训中心 编辑：宁波朗阁小编
In the Arctic Circle, it is often possible to see a pageant of "Northern Lights (aurora borealis); seen a similar scene in the Antarctic Circle, known as the" southern lights (aurora australis). But not common in densely populated areas. This is caused by speculation and explore the mystery of the Sky centuries, the ancient Chinese, the Japanese, the Greeks, the Romans have a text description. The former Eskimos thought it was the spirits guide the torch of the souls of the dead to heaven, many ethnic groups have their different aurora legend. For a long time, the causes of the aurora has not been possible to get a satisfactory explanation. Quite a long time, it was believed that the aurora may be formed by the following three reasons. According to one view, The Aurora fire ignited outside the Earth, because the Arctic area near the edge of the earth, they are able to see this great fire. Another view was that, Aurora went down Yuhi transmission albedo glow. There is also a perception that the polar ice-rich, they absorb sunlight during the day, storage up to the night released, became Aurora. In short, opinions, inconclusive. Until the 1960s, the ground observations and satellite rocket detected combine research, before gradually formed a the aurora physical description.
It is now recognized, Aurora on the one hand and to the large-scale interaction of the Earth's upper atmosphere and the Earth's magnetic field, on the other hand, with the sun erupted high-speed stream of charged particles, such particles flow is usually known as the solar wind (solar wind). Thus, the conditions essential for the formation of Aurora atmosphere, magnetic field and solar wind, are indispensable. With these three conditions of the other planets of the solar system, such as Jupiter, Saturn and Mercury around will produce the aurora, which has been proved by the fact of the experimental observations.