ThesplendidauroralightdisplaysthatappearinEarth’satmosp...
問題詳情：ThesplendidauroralightdisplaysthatappearinEarth’satmospherearoundthenorthandsouthmagnetic(磁的)poleswereoncemysteriousphenomena.Now,scientistshavedatafromsatellitesandground-basedobservations...