Also: OSIRIS-REx, Bennu
NASA's OSIRIS-REx returned about 120 g from asteroid Bennu in 2023, the largest asteroid sample yet.
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Glavin and colleagues found Bennu samples rich in volatiles, with more carbon, nitrogen and ammonia than Ryugu samples and most meteorites.
As reported in: Glavin, Dworkin, Alexander et al. (2025). Abundant ammonia and nitrogen-rich soluble organic matter in samples from asteroid (101955) Bennu. Nature Astronomy. doi:10.1038/s41550-024-02472-9
McCoy and colleagues reported sodium-bearing phosphates, carbonates, sulfates, chlorides and fluorides in Bennu samples, formed as salty water evaporated.
As reported in: McCoy, Russell, Zega et al. (2025). An evaporite sequence from ancient brine recorded in Bennu samples. Nature. doi:10.1038/s41586-024-08495-6