The study of tectonics, geodynamics and the internal structure of planetary bodies is fundamental to understanding the geological evolution of both terrestrial bodies and icy satellites, as well as solar system formation in general. Various instruments and datasets can be exploited to model and interpret surface structures, which in turn can aid the conceptualization of the body's internal structure.

This session focuses on the investigation of such datasets through the context of tectonic and geodynamic processes to infer the shallow and deep subsurface structures of terrestrial bodies and icy satellites, and the internal mechanisms that may occur within them. Central to this focus is geodynamic modeling (e.g. thermal evolution, elasticity, isostasy, tidal forces), which reveals aspects of planetary interiors (i.e. layering and differentiation, composition, density, thickness, rigidity, heat transfer) through the analysis of gravity, magnetic, seismic, radar and topography data. Investigations might also focus on relationships between global and regional tectonic features, lithospheric stresses, and global tectonic evolution over time. Innovative methods involving the use of a combination of datasets derived from both satellite and ground-based observations (i.e. landers/rovers) are encouraged. Additionally, new observations and perceptions from recent missions such as BepiColombo, JUICE, Europa Clipper, Veritas, EnVision are also welcome.