My research is in the area of theoretical and computational astrophysics, with my main scientific interests in the process of star formation; the dynamics, thermodynamics, and chemistry of the interstellar medium and circumgalactic medium; the structure and evolution of spiral galaxies; and the physics of accretion and outflows. I am also active in the development of numerical methods and tools for computational fluid dynamics. My work focuses on understanding the physics behind a wide range of astronomical systems involving gas dynamics, from the formation and collapse of clouds to create our own and other solar systems; to the cycle of energy and matter exchanges between the gaseous and stellar components in the Milky Way and other spiral galaxies; to the regulation of star formation in the cosmos over the last ten billion years. An important emphasis has been on understanding and quantifying the roles of supersonic turbulence that pervades the Universe.