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NASA Deliberately Made Eerie Glowing Clouds… to Study Eerie Glowing Clouds – ScienceAlert

If you’re in the right place at the right time, and you turn your eyes to the sky, you just might catch sight of something eerily beautiful: Wisps of cloud, high…

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If you’re in the right place at the right time, and you turn your eyes to the sky, you just might catch sight of something eerily beautiful: Wisps of cloud, high in the sky, glowing softly even though the Sun has already slipped below the horizon.
These are noctilucent, or night-shining, clouds, appearing at twilight primarily in the summer months, at high latitudes (but never observed from within the polar circle). They consist of collections of ice crystals high up in the atmosphere, at mesospheric…

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