Noble gases and nitrogen in samples of asteroid Ryugu record its volatile sources and recent surface evolution. - Okazaki R; Marty B; Busemann H; Hashizume K; Gilmour JD; Meshik A; Yada T; Kitajima F; Broadley MW; Byrne D; Füri E; Riebe MEI; et al. (Science (New York, N.Y.), 2023)