Incorporation of atmospheric components in planetary magma oceans through bubble-metal compounds.

Gas bubbles attach to metal droplets in magma oceans, forming compounds that trap atmophile elements and influence planetary core formation.

• Why it matters: Understanding how volatile elements like carbon, hydrogen, and nitrogen were incorporated into planetary interiors is crucial for models of planetary formation and evolution, especially given their early presence and potential loss during high-temperature events.
• What they did: Experiments demonstrated that gas bubbles strongly adhere to metal droplets in magma-like mixtures, creating stable compounds that resist segregation, with low gravity enabling these compounds to sink and trap atmophiles inside small bodies.
• The result: This mechanism suggests that early flotation of bubble-metal compounds contributed to mantle siderophile enrichment and core formation, offering a unified explanation for volatile distribution during planetary accretion.