The realm of Geophysical and Astrophysical Fluid Dynamics (GAFD) has significantly expanded in phase space to include a wide variety of physical regimes. Models originally developed for phenomena on Earth and across the solar system are now being applied to exoplanets across vast parameter regimes. Atmospheric circulation models are being tested against new observational constraints, as from the Juno Mission. On the other extreme of the Reynolds number, modeling convection in ice shells offer explanations for many geological features on the surfaces of potentially habitable ocean worlds across the solar system. In addition, tools from the astrophysical context are now being applied to planetary science problems. This session aims to bring together a wide cross-section of these diverse communities that use a variety of practices and state-of-the-art methods. We expect an engaging session that focuses on new results in exoplanetary and solar system science, as well as computational methodology.