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St. Paul, Minn.

More Aurora Borealis predicted

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Flare loops from the sun
Large, hot, gas-filled loops above a solar flare. These post-flare loops are still active.
Photo by NASA via Getty Images
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Flare loops from the sun
Large, hot, gas-filled loops above a solar flare. These post-flare loops are still active.
Photo by NASA via Getty Images