There are less than two weeks left to submit your abstract to “Exoplanet Geochemistry and Climate” (session 01b) for Goldschmidt in Montréal! Abstract deadline: February 26 at 11:59 Eastern (23:59 ET/UTC-5) Submit an abstract: https://conf.goldschmidt.info/goldschmidt/2026/cfp.cgi We invite all abstracts aimed at understanding exoplanets. We strongly encourage submissions from early-career researchers and underrepresented groups. Keynote: Xinting Yu (UT San Antonio) Conveners: Aaron Werlan (Loyola Marymount University) Urja Zaveri (ETH Zürich) Maggie Thompson (Carnegie Institution for Science) Haleigh Nyberg (Purdue University) Tobi Hammond (Purdue University) Kara Brugman (University of New Mexico) Full session description: Observations from the James Webb Space Telescope, ALMA, and next-generation ground-based facilities now provide detailed constraints on the compositions, atmospheres, and host stars of distant worlds. Among them, super-Earths and sub-Neptunes are the most common types of planets, yet they have no direct analog in our Solar System. How does chemistry shape this extraordinary diversity of planets? Addressing that question requires the combined expertise of astronomers and geoscientists who can link observational data to the chemical and physical processes that control planetary formation, differentiation, and the evolution of surfaces and atmospheres. This session offers a unified forum at Goldschmidt for research that spans the chemistry and climate of planets within and beyond our Solar System. We invite contributions that integrate experiments, models, and observations to explore the condensation and differentiation of planetary materials, volatile partitioning and isotopic evolution, interior–atmosphere coupling, planetary climates and habitability, and the influence of stellar and galactic environments on planet formation. By bringing together approaches from atmospheric science, geochemistry, cosmochemistry, planetary science, and astronomy, the session aims to build dialogue between disciplines and prepare the community for the next generation of exoplanet data. It serves as a one-stop venue for researchers investigating planets as coupled chemical and physical systems, from their origins in disks to the long-term evolution of their atmospheres and interiors. We especially welcome interdisciplinary collaborations and early-career participation in this session that broadens Goldschmidt’s geochemical tradition to include planetary systems across the galaxy.