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

toggle caption Josh Maidwell/Barcroft Media/Landov

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

toggle caption Rune Stoltz Bertinussen/AFP/Getty Images

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