Some clouds begin with dust from meteors.
These electric-blue noctilucent clouds form when tiny ice crystals grow around particles left high in the atmosphere.
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Night clouds seeded by meteors
They form roughly 80 kilometres above Earth, far higher than ordinary weather clouds.
NASA detected meteoric material inside their ice crystals.
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Night clouds seeded by meteors
They can still catch sunlight after the ground below has gone dark.
Their apparent night-time glow is sunlight scattered by ice, high above the shadowed landscape.
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