This is a super cool paper (and last chapter of her PhD thesis) from my now-graduated student @import-astrory.bsky.social I would explain more but, really, the headline kind of does the job.
Neptune's Inner Moons May Be Shattered Remains of Ancient Icy WorldsNew findings from Caltech researchers suggest Neptune's smallest satellites formed from the shattered remains of an original moon system that was destroyed when Triton was captured by Neptune's gravit...www.caltech.edu