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This conference talk explores the formation and disruption mechanisms of resonant-chain planetary systems, presented by Fei Dai from Hawaii as part of the "Planets on the Edge" KITP conference held from May 5-8, 2025 at the Kavli Institute for Theoretical Physics at UC Santa Barbara. Delve into the fascinating discoveries from the Kepler and TESS missions that have revealed thousands of short-period exoplanets with no Solar System counterparts, many of which are Earth-sized and likely rocky. The 17-minute presentation contributes to the conference's broader goals of understanding the nature, formation, and evolution of Earth-sized planets in inner protoplanetary disks by addressing key questions about close-in rocky planets: their nature and atmospheres, formation processes (in-situ vs. migration), governing parameters across different star systems, and why similar planets don't exist in our Solar System. The conference brings together experts from various fields including exoplanet demographics, protoplanetary disks, planet formation models, and meteoritics to synthesize current knowledge and advance future research directions.
