Metallic Hydrogen Makes Its Debut, Maybe

Metallic Hydrogen Makes Its Debut, Maybe - Science News:

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Hydrogen gas squeezed at tremendous pressures has transformed into a metal in the laboratory. So say a pair of scientists in Germany, whose bold claim is being met with skepticism.

Many scientists have tried to make metallic hydrogen since its existence was first predicted in 1935. The exotic substance is thought to form at high pressures, such as those in Jupiter’s core. It may be a superconductor at room temperature, useful for making wires that carry electricity with little loss of current. And NASA hopes to one day put it to work as a rocket fuel that would be more powerful than anything around today.