In the illustrious journal Nature (well, Nature Communications) vol. 16:
Genge, Matthew J. Almeida, Natasha V. van Ginneken, Matthias et al. Abundant microchondrules in 162173 Ryugu suggest a turbulent origin for primitive asteroids 6466 s41467-025-61357-1
Yet again, I’ll state: most asteroids (the unmelted, “primordial” ones) preserve material from the early Solar System, where planets (and the few asteroids that had melted) had erased these signs. What do these relics tell us of the Solar System’s history and processes? One material class from the dawn of this System is chondrules- tiny beads of minerals that melted, then cooled into spherules or “BBs.” All signs indicate that Ryugu consists of material that formed in the outer Solar System, yet such material should be chondrule-deficient. Examining the trove that is the Haya2 sample of Ryugu, we can find plenty of (micro)chondrules if we look hard enough. So… Ryugu is some fluke? Perhaps not- the smaller the particle, the more likely it drifts about the Solar System, due to e. g., solar radiation pressure, or entrainment by gases present before the (pre-)Solar Nebula cleared out. Genge et al. attempt to explain this observation of Ryugu material, and therefore (pre-)Solar processes.