十大最壮观宇宙美景:马头星云VS弓形北极光(2)
弓形北极光
北极光和南极光是夜空中最壮观美丽的景象,北极光是由地球大气层粒子和源自太阳的太阳风的粒子流产生交互作用形成的。地球磁场疏导这些粒子朝向地球极地,从而在夜空中升起帷幕状的彩色光。
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