First hydrogen metal created on Earth draws critical doubt

Scientists from Harvard University say theyve ended an 80-year quest by compressing hydrogen into a potentially superconducting metal. Using a diamond-tipped anvil, the team squeezed a hydrogen gas sample to 71 million PSI, more than the pressure at the Earths core. Its the first-ever sample of metallic hydrogen on Earth, so … youre looking at something thats never existed before, says research lead Isaac Silvera. However, other scientists have reservations, saying its possi…
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