A blue cloud of frosted meteor smoke is pinwheeling around the North Pole--a result of unusually intense planetary wave activity.
Space Weather News for May 31, 2019
http://spaceweather.com
https://www.spaceweatheralerts.com
HUGE BLUE CLOUD CIRCLES THE NORTH POLE: A huge blue cloud of frosted meteor smoke is pinwheeling around the Arctic Circle. The phenomenon, driven by planetary wave activity, is kickstarting what may be one of the best seasons for noctilucent clouds in years. Sky watchers in the USA have already seen these strange clouds even though the season is just beginning. Visit Spaceweather.com for the full story and observing tips.
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Above: Data from NASA's AIM spacecraft and Microwave Limb Sounders show an icy-blue cloud circling the Arctic. Get the full story.
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