Isotopic enhancements of 17 O and 18 O from solar wind particles in the lunar regolith
Differences in isotopic abundances between meteorites and rocks on Earth leave unclear the true composition of the gas out of which the Solar System formed1-4. The Sun should have preserved in its outer layers the original composition, and recent work has indicated that the solar wind is enriched in16O, relative to Earth, Mars and bulk meteorites5. This suggests that self-shielding of CO due to photo-dissociation, which is a well understood process in molecular clouds, also led to evolution in...[Show more]
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