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   漂亮的石头 版主 Staff Member

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   3月17日世界时04:30，一次日冕物质抛射的前锋抵达地球，创造了相当温和的地磁风暴。但几小时内地磁风暴的强度增加到了严重的G4级。地磁风暴强度最高为G5级。G4级是当前太阳周期出现的最强风暴。风暴让高纬度地区出现了明亮的极光。
   
   
   

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   漂亮的石头, 2015-03-18

   #1

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