Carbonaceous chondrites are a primitive class of stony meteorites rich in carbon, water, and organic compounds, preserving material largely unaltered since the early Solar System. The CM subtype shows evidence of aqueous alteration on its parent body and is exemplified by the Murchison fall (1969) and the rarer CM1/2 hillsborough-meteorite (2024) — only the second witnessed fall of that specific subtype. CM chondrites carry exogenous organic material, including amino acids, that supports the hypothesis that meteorite delivery seeded early Earth with prebiotic building blocks. Sample-return missions to asteroids like Bennu and Ryugu study the same parent-body chemistry via direct sampling rather than a meteorite fall.