Jupiter's Interior (IMAGE) Carnegie Institution for Science Caption This is an illustration of the layer of dark hydrogen the team's lab mimicry indicates would be found beneath the surface of gas giant planets like Jupiter, courtesy of Stewart McWilliams. Credit Stewart McWilliams Usage Restrictions With credit 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.