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Noctilucent clouds, or night shining clouds | by NASA Johnson
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Noctilucent clouds, or night shining clouds

iss062e005412 (Feb. 12, 2020) --- Noctilucent clouds, or night shining clouds, the highest clouds in the Earth's atmosphere, are pictured from the International Space Station orbiting 269 miles above the South Pacific. Noctilucent clouds are only visible when the Sun is below the Earth's horizon and illuminates them.

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Taken on February 12, 2020