One paper in Geochimica et Cosmochimica Acta for 1 Apr (vol. 418), but an interesting one:
Oerter, E. J. H. Herd, C. D. K. Alexander, C. M. O’D. Triple oxygen and hydrogen isotope composition of hydroxyl water in Orgueil (CI-type) and Tagish Lake (C2-type) ca… 79 .2026.02.026
Meteorites have water. Conventional wisdom is that the carbonaceous-chondrite meteorites are the “water-rich” ones, ordinary chondrites are “water-poor”, and enstatite chondrites are dry. Oerter and crew take a deeper dive into the water of two notable carbonaceous chondrites. What do their isotopes (here 16O to 18O, and 1H and 2H) tell us of these traces from the early Solar System? It is by now accepted that carbonaceous chondrites are (originally) from the outer Solar System; not only was deuterium (2H) more common there, but it is still infalling from the interstellar medium. That’s right, galactic water.