https://thescience.dev/quantum-sensors-to-image-meissner-effect-in-hydride-supercondutors/

Hydrogen (like many of us) acts weird under pressure. Theory predicts that when crushed by the weight of more than a million times the Earth’s atmosphere, this light, abundant, normally gaseous element first becomes a metal, and even more strangely, a superconductor – a material that conducts electricity with no resistance.