Discover and read the best of Twitter Threads about #noctilucentclouds
Most recents (2)
From late May through July, one of the most dynamic and beautiful spectacles can be seen in the night sky from mid latitudes. The shimmering iridescence of Noctilucent Clouds (NLCs) is worth getting out to watch and they're easy to photograph.
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#noctilucentclouds #NLCNow
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#noctilucentclouds #NLCNow
Derived from the Latin for "night-shining", noctilucent clouds usually resemble luminous, silvery cirrus clouds (the wispy ones) and start to appear in the north west to north shortly after sunset as the sky begins to get dark enough to see the brighter stars. 2/25 
As dusk deepens, NLCs appear to get brighter and cover a larger part of the sky - it's not uncommon for them to stretch overhead during a strong display. Displays can last from a few minutes to hours and even all night. 3/25
Something from the @Space_Station we've never seen before - #noctilucentclouds *and* comet #NEOWISE above them: facebook.com/Roscosmos/post…
Even more attempts to catch comet #NEOWISE over #noctilucentclouds from the @Space_Station can be found in the album roscosmos.ru/28437/ - for great *ground-based* views of NEOWISE *behind* NLCs see e.g. facebook.com/groups/astroph… and facebook.com/groups/SWERepo…
And *still* more images from the @Space_Station of comet #NEOWISE rising over #noctilucentclouds at the limb of the Earth:
