The northern lights over Iceland in February. The glowing orange area on the left side are the lights of the capital, Reykjavik. Jamie Cooper/SSPL via Getty Images hide caption

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Jamie Cooper/SSPL via Getty Images

People view the Northern Lights over Bamburgh Castle Beach Thursday in Northumberland, England. A powerful solar flare caused the aurora borealis to be visible farther south than usual. Josh Maidwell/Barcroft Media/Landov hide caption

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Josh Maidwell/Barcroft Media/Landov

The northern lights over Tromsoe, northern Norway, on Jan. 24, 2012. Rune Stoltz Bertinussen/AFP/Getty Images hide caption

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Rune Stoltz Bertinussen/AFP/Getty Images