Electric-blue clouds drift across Arctic
Filed under Featured
May 22, 2015
1 min to read
Reprinted Space Weather News for May 22, 2015 http://spaceweather.com
NOCTILUCENT CLOUDS: NASA’s AIM spacecraft has spotted a luminous patch of electric-blue drifting across the Arctic Circle. The sighting marks the beginning of the 2015 season for northern-hemisphere noctilucent clouds (NLCs). Long ago, NLCs were a polar phenomenon confined mainly to the Arctic. In recent years, however, they have intensified and spread, with sightings as far south as Utah and Colorado. Learn more about these exotic clouds and how you might see them this summer on today’s edition of http://spaceweather.com.
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