Phosphorus-rich grains in Ryugu samples with major biochemical potential
Nature Astronomy, Published online: 25 September 2024; doi:10.1038/s41550-024-02366-w Hydrated ammonium–magnesium–phosphorus-rich grains have been discovered in Ryugu samples. Embedded within an organic-rich phyllosilicate matrix, they may have been a key source of phosphorus and nitrogen in early terrestrial water reservoirs. —————