Sunday, December 20, 2009

Earth's upper atmosphere cooling dramatically
[ Fri, 18 Dec 2009 15:48:26 GMT ]

New research shows that the outermost layer of the atmosphere will lose 3 percent of its density over the coming decade, a sign of the far-reaching impacts of greenhouse gas emissions. As the density declines, orbiting satellites experience less drag. When the sun is relatively inactive — as it has been in recent years — the outermost layer of Earth's atmosphere cools dramatically, new observations find.


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