Source - Space Weather News for June 13, 2016:
http://spaceweather.com
NIGHT-SHINING CLOUDS OVER EUROPE:
Observers in Europe are reporting an outburst of bright noctilucent
(night-shining) clouds. Seeded by meteoroids, these electric-blue
clouds float at the edge of space and can be seen alongside the stars
after sunset. Soon, they will likely spread to North America. Visit
http://spaceweather.com for pictures and observing tips.
Image credits: Space Weather News /
Svante Sandström
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