Rationale: Extraterrestrial materials provide a growing array of constraints on the history of the solar system in all stages of its formation. Observations and models of our own and other protoplanetary disks provide a growing body of complementary evidence. This workshop will bring together an interdisciplinary and global group of (1) observers of extrasolar disks and planets, (2) experts in the physical modeling of disks in time and space, and (3) specialists in the physical, chemical and isotopic properties of meteorites, comet samples, and planetary materials.