Iridescent clouds are a diffraction phenomenon caused by small water droplets or small ice crystals individually scattering light. This is still one of the most stunning, spotted over Pagadian City, Philippines on April 25, 2017 https://t.co/hVINazm3IV pic.twitter.com/Y8xgMYvYMm
— Massimo (@Rainmaker1973) May 16, 2020
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