Abstract: 

Planetesimals are hundred- to thousand-kilometer-sized planetary building blocks. Understanding their formation and evolution is crucial for deciphering how planets formed and developed their properties. Observations of meteorites, especially those related to volatiles (whose behaviors are sensitive to physical and chemical conditions), provide valuable constraints for unraveling the mysteries surrounding the early solar system. In this talk, I will present my recent research on the transport of water and moderately volatile elements (MVEs) in planetesimals (meteorite parent bodies) during their evolution. My findings challenge the conventional interpretations of the redox states of iron meteorite parent bodies and the MVE contents of differentiated meteorites, offering new perspectives on planet formation processes.