Noctilucent clouds (NLCs), or night shining clouds, are tenuous cloud-like phenomena in the upper atmosphere of Earth. When viewed from space, they are called polar mesospheric clouds (PMCs), detectable as a diffuse scattering layer of water ice crystals near the summer polar mesopause. They consist of ice crystals and from the ground are only visible during astronomical twilight.
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Last edited by iconized on Tue, 25th Jun 2024 09:37; edited 2 times in total
Perhaps its not usual where he lives. I was staring at the pic for a while trying to see something about them, to realize "Nope, It's just clouds". At least here in Florida nearly any sunset that has clouds looks like that.
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