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This research aims to accurately quantify hydrogen content in Earth's core under extreme conditions.

February 12, 2026Nature CommunicationsOpen Access

Experimental quantification of hydrogen content in the Earth’s core

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Experimental quantification reveals hydrogen content in Earth's core, suggesting major implications for water formation.

This research aims to accurately quantify hydrogen content in Earth's core under extreme conditions.
Performed superliquidus metal-silicate partitioning experiments using laser-heated diamond anvil cells
Utilized atom probe tomography for direct observation
Analyzed nanoscale interactions between hydrogen, silicon, and oxygen in iron alloy
Estimated hydrogen content of Earth's core at 0.07-0.36 wt.%
Observed molar silicon/hydrogen ratio close to unity
Indicated that Earth's water likely originates from early terrestrial accretion rather than comets

Huang et al. (2026) studied this question.

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