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ni shi dian ni shi guang , ni shi ji di de shen hua ji di ji guang xian xiang
Author(s): 
Pages: 66-67
Year: Issue:  4
Journal: Ocean World

Keyword:  太阳风 南极光 北极光 格陵兰 现象 带电粒子 极地 世纪 能量 火炬;
Abstract: <正>许多世纪以来,极光一直是人们猜测和探索的天象之谜。以前,爱斯基摩人以为那是鬼神引导死者灵魂上天堂的火炬;13世纪时,人们则认为那是格陵兰冰原反射的光;到了17世纪,人们才称它为北极光(在南极所见到的同样的光称为南极光)。
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