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Sunday, November 22, 2009

Photo: Don't Blame Sun for Global Warming, Study Says


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Coils of electrified gas known as coronal loops writhe above sunpots—cooler, dark patches (inset) that appear on the sun's surface in periodic cycles.

The waxing and waning sunspots alter the amount of energy Earth gets from its star, but not enough to impact global climate change, a new study suggests.

Image courtesy NASA