Meteoritic organic matter records primitive oxygen reservoirs of the solar system

Proceedings of the National Academy of Sciences, Volume 123, Issue 40, October 2026. SignificanceType 1 and 2 carbonaceous chondrites are primitive, organic-rich meteorites that may have delivered a significant amount of the carbon and nitrogen available for life’s emergence on Earth. Despite extensive chemical, structural, and isotopic ...

pnas.org ·2026-09-21

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