Swedish scientists light up sky for northern lights research

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Northern lights, known as aurora borealis or polar lights, appear as swathes of blue, green and purple lights in sky

from The News International - Sci-Tech https://ift.tt/OSwNV7E
Northern lights, known as aurora borealis or polar lights, appear as swathes of blue, green and purple lights in sky https://ift.tt/JljMrDE

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