Radiation transport and kinetic theory of particles are relevant to many areas of astrophysics, a prime example of which is the physics of core-collapse supernovae. The goal of this project is to develop and deploy a software element to solve radiation hydrodynamics problems on modern supercomputers. This functionality will be developed within<br>GenASiS, a new framework to facilitate simulation of astrophysical phenomena on leading capability supercomputers.<br><br