On the Path to Metallic Hydrogen (image) American Physical Society Caption The hydrogen based compound SiH4(H2)2 may be a useful system in which to explore metallic hydrogen. Credit Image copyright American Physical Society [Illustration: Alan Stonebraker after T. Strobel et al.] Usage Restrictions None 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.