# Scientists melt diamond to unlock secrets of ice giants Diamond rains discovered in the depths of Neptune and Uranus. - **Source:** [Phys.org - latest science and technology news stories](https://brifing.si/source/8b0f98da-d179-4c93-871f-7ac460bf9c61) - **Published:** 2026-08-30 - **Topic:** [Business](https://brifing.si/c/business) - **Original article:** - **On Brifing:** https://brifing.si/s/ac7a21bb-06d4-4f05-9ff9-5db2a385dce5 ## Mysterious weather phenomena of ice giants The most intriguing weather phenomena in the solar system don't occur on Earth or Jupiter's Great Red Spot, but within ice giants like Neptune and Uranus. Scientists have long theorized that diamond rains form in the extreme pressure and temperature conditions deep within these planets. Until now, experimental evidence supporting this theory was lacking. The new study marks the first laboratory observation of this exotic weather phenomenon. ## How diamond rain forms Methane gas abundant in ice giants' atmospheres breaks down into carbon under extreme pressure and temperature in planetary depths. These carbon atoms compress into diamond crystals at about 5,000 km depth and 5,000°C temperature. The formed diamonds then rain down toward the planet's core. This process plays a critical role in maintaining the planets' internal heat. ## Experimental proof achieved Researchers at SLAC National Accelerator Laboratory used powerful laser pulses to melt diamond. The lasers focused on a thin carbon layer, creating temperatures reaching 5,000°C and pressures of 150 GPa in billionths of a second. These conditions replicated Neptune's deep atmospheric environment in the lab. The experiment showed diamond first transforming into liquid carbon, then recrystallizing. ## Properties of superfluid diamond Experiments revealed that under extreme conditions, diamond in liquid form exhibits both metallic and superfluid properties. This superfluid diamond can conduct electricity and has almost no viscosity. The discovery opens new horizons not just in planetary science but also materials science. It holds potential for developing new materials in quantum computing and electronics. ## Impact on ice giants' magnetic fields Neptune and Uranus have magnetic fields significantly different from Earth's, with their magnetic poles substantially offset from geographic poles. The new discovery suggests superfluid diamond might contribute to these anomalous magnetic fields. How diamond rains affect planetary dynamos will be a focus of future research. These findings could also help understand other ice giants in our solar system. ## Industrial application potential Lab-created superfluid diamond holds great potential for industrial applications. The material could be used in ultra-durable coatings, high-performance electronics, and quantum computer components. However, maintaining these conditions and processing the material remains challenging with current technology. Researchers continue working to develop more practical production methods, which could revolutionize materials science. ## Implications for planetary formation theories The discovery necessitates revisiting planetary formation theories. Current models of ice giants' internal structure and evolution can't fully explain the diamond rain phenomenon. New data requires recalculations of these planets' mass distribution and internal energy balance. This also offers fresh perspectives for exoplanet research, potentially leading to new criteria for characterizing ice giants beyond our solar system. ## Groundbreaking scientific discovery This study represents a landmark achievement for both fundamental and applied sciences. The experimental demonstration of diamond rain phenomenon bridges astrophysics and materials science. Published in Nature Astronomy, the discovery has made waves in scientific communities. The research team continues investigating the process under different conditions. These findings deepen our understanding of the universe's fundamental workings. ## Sources covering this story - https://phys.org/news/2026-08-scientists-diamond-secret-ice-giants.html — --- _Summary written by Brifing from the original reporting. Copyright in the original article belongs to its publisher; read the full piece at the link above._