This is a $656,639 grant awarded by NASA's Shared Services Center to Case Western Reserve University's Office of Research Administration Division, doing business as University Hospitals of Cleveland. The grant falls under NASA's Cosmic Origins Program and aims to address the question "How Does the Universe Work?" by providing fundamental data on the nature of galaxies. The work will empower other scientists to determine stellar masses for calibrating the relation between stellar mass and dark matter halo mass, as well as provide astrophysical constraints on the nature of dark matter and theories of galaxy formation. The grant has a period of performance from June 1, 2019 through May 31, 2023 and does not have a set-aside designation.