Explaining Nature on Instagram: "Iridescent clouds are a colorful atmospheric phenomenon that occurs when sunlight or moonlight diffracts through tiny, uniformly sized water droplets or ice crystals in a thin cloud. Unlike rainbows, which are caused by refraction and reflection in larger raindrops, iridescent clouds display shimmering pastel hues—often pinks, greens, blues, and purples—spread irregularly across the cloud’s surface, giving them a pearly or oil-slick-like appearance. • #reels #exp