Many thousands of different isotopes exist, each of which can differ dramatically from systems with just one less nucleon. The need for nuclear data is large in astrophysics: simulations of phenomena such as nucleosynthesis or neutron star mergers rely on the properties of dense matter at the extremes of isospin, density and temperature; these extremes are today not accessible in the lab.

Energy density functionals (EDFs) are our current best hope to provide this data; an EDF describes a nucleus in terms of its constituent nucleons while the equations remain sufficiently tractable for global application. We are building a new class of models aimed at providing all necessary data to astrophysical applications: the Brussels-Skyrme-on-a-Grid (BSkG). These models accord the nucleus an extreme amount of freedom: nuclear shapes range from spheres and axially symmetric ellipsoids but also exhibit triaxial deformation, reflection asymmetry, non-zero angular momentum or all of these combined! These models do not just describe bulk properties such as masses and radii, but also pseudo-observables that serve as input to reaction models, predictions for dense matter in neutron stars and fission properties.

I will start by introducing the general concepts behind the BSkG models and then discuss the quality of the model w.r.t. nuclear ground state properties, including some comparisons to new experimental data. As second major subject, I will discuss our ongoing effort to predict the fission properties of thousands of unknown isotopes. Finally, I will end the presentation by outlining other research directions that our group is investing in.