The Noctilucent or night-shining clouds (NLCs) appear in a summer evening of Sweden. NLCs lie near the edge of space, reflecting sunlight from about 80 kilometers above Earth’s surface. They are usually spotted above the Polar Regions in summer.



comments (1)

  • skycastle Reply

    It’s said that the NSC appears more and more because of the rise of CO2, which causes more water in high level of atmosphere.Ok, anyway I like this one.

    May 23, 2012 at 9:03 am

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