The inner moons of Neptune look like they were turned inside out, with deep-interior minerals spattered across their surfaces. Probably these moons are the shattered remains of earlier satellites that were shredded when a Pluto-like object came barreling in. https://www.caltech.edu/about/news/neptunes-inner-moons-may-be-shattered-remains-of-ancient-icy-worlds #space #science #nature