Space Weather
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Solar storms can seriously damage power grid transformers. (Credit: NOAA Space Weather Prediction Center)
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Auroras over Alaska. (Photo: Daryl Pederson)
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Night lights from the International Space Station show cities of Ireland and the United Kingdom in the foreground contrasted by the bright sunrise in the background. The greens and purples of the Aurora Borealis are seen along the rest of the horizon.
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Loops, flares and eruptions on particularly active day on the sun. (Credit: NASA/Solar Dynamics Observatory)