NASA Headquarters is offering a federal grant opportunity titled "ROSES 2025: D.4 Astrophysics Theory," aimed at advancing research in astrophysics. Proposers must be affiliated with a U.S. institution and are required to follow specific guidelines outlined in the NASA Proposer's Guide, particularly for non-U.S. organizations. This grant is part of NASA's broader Research Opportunities in Space and Earth Sciences (ROSES) initiative, which supports a wide range of scientific research and technology development. Interested applicants should note that the proposal submission deadline is July 3, 2025, and can direct inquiries to Sanaz Vahidinia at HQ-ATP@mail.nasa.gov for further assistance.