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Aurora-oval

En aurora-oval er et ovalt belte av polarlys rundt jordens magnetiske poler. De betegnes hhv. Nordlys-ovalen på den nordlige halvkule og Sørlys-ovalen på den sørlige halvkule. Bredden varierer avhengig av det såkalte romværet – i perioder med lav solaktivitet blir ovalen smal, mens den øker i bredde når det kommer mer utslipp av solvind.

Den nåværende tilstanden av aurorale ovaler kan ses på nettsiden www.spaceweatherlive.com

Aurora-oval på den sørlige halvkule. Kilde: https://www.spaceweatherlive.com/en/auroral-activity/auroral

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