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美国国家航空航天局科学家称,20 1 2年,人们将会欣赏到堪称50年来最美丽的北极光。那么,如此壮丽的极光是怎么形成的?怎样才能观赏到这难得一遇的奇景呢?本期环球人文地理将为你揭开北极光神秘的面纱……
NASA scientists say in 2012, people will appreciate the most beautiful northern lights in 50 years. So, how is this magnificent aurora formation? How can we watch this rare spectacle? This issue of global human geography will uncover the mysterious veil of Northern Lights ...