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Noctilucent Cloud Sightings

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Published on Apr 1, 2015

Polar Mesospheric Clouds form during each polar region's summer months in the coldest place in the atmosphere, 50 miles above Earth's surface. Noctilucent Clouds were first observed in 1885 by an amateur astronomer and have been becoming brighter and more frequent. They have appeared to be moving to lower latitudes in recent years. Image and time-lapse video Credit: Jacek Stegman, MISU
Associated with AGU 2007 presentation:
http://www.nasa.gov/mission_pages/aim...

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