Diamond Shower Neptune (IMAGE) Helmholtz-Zentrum Dresden-Rossendorf Caption By conducting experiments at the Linac Coherent Light Source -- one of the world's most powerful X-ray lasers -- an international team of researchers led by HZDR physicist Dr. Dominik Kraus was able to demonstrate that hydrocarbon compounds split into carbon and hydrogen inside ice giants such as Neptune, shown here. The carbon turns into a "diamond shower." Credit Greg Stewart / SLAC National Accelerator Laboratory Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.