The new study captured hydrogen in a critical transitional state between its solid and metallic phases. Metallic hydrogen possesses extraordinary energy density -- second only to nuclear energy.

January 27, 2017: For the first time in the wold, scientists created metallic hydrogen by applying almost five million atmospheres of pressure to liquid hydrogen. That's about five million times ...

Traveling inward toward the center of the planet, the increased pressure causes the liquefied gas to become metallic hydrogen. Saturn does not have as much metallic hydrogen as the largest planet ...

CAPE CANAVERAL (CBSMiami/AP) — A hazardous hydrogen fuel leak stopped NASA's latest attempt to fuel its huge moon rocket for a countdown test on Thursday. It was just the latest in a series of ...