Understanding the nature and variability of (exo)planetary atmospheres, the physical mechanisms governing atmospheric dynamics and chemical evolution are strong driving forces of (exo)planetary science and solar system exploration mission planning. While the long-term Earth evolution is constrained by geological studies and isotopic analyses, the evolutionary paths of other planets must be reconstructed from data obtained through astronomical observations and planetary missions. Models of planetary atmospheres use these observations to illuminate physical processes operating from the Earth to planets in our solar system and beyond. Processes that govern the interactions of atmospheres with planetary surfaces are an important aspect of planetary evolution. The rapidly increasing number of discovered exoplanets provides an exciting opportunity for interdisciplinary collaborations, between heliophysicists, astrophysicists, planetary and climate scientists. This session welcomes observational, theoretical, experimental, and field studies relevant to physical and chemical evolution of (exo)planetary atmospheres and planetary habitability in and outside of our solar system.