Hydrogen Made the Moon's Core Lighter ⚡ экспресс
Original: "Fe-H melting curve below 3 GPa: Implications for hydrogen in the lunar core"
Experiments show: hydrogen readily dissolves in liquid iron at low pressure, explaining the low density of the Moon's core.
Links in the knowledge graph 1
Turns out, the Moon's core isn't pure iron but spiked with hydrogen, like soda. This explains its low density and changes ideas about how planets form. Hydrogen might hide in the interiors of other worlds too.
🎯 The Moon isn't the only one: Mercury also has an unusually light core, and hydrogen might be hiding there too.