Diamond Rain on Ice Giants Neptune and Uranus experience literal diamond rain. Carbon atoms get crushed under extreme atmospheric pressure. The diamonds form at depths of 5000 miles. They fall like hailstones through hydrogen and helium. Each diamond can weigh several carats. Scientists recreated this process in laboratories using shock waves. The ice giants are actually diamond factories in space.
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ScienceMar 22, 2026
Diamond Rain on Ice Giants
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