NASA Headquarters is offering a federal grant opportunity titled "ROSES 2025: C.2 Solar System Science," aimed at advancing research in solar system science through the submission of proposals by eligible institutions. Proposers must be affiliated with a U.S. institution, as NASA primarily funds domestic organizations, although some provisions exist for international collaboration under specific guidelines. 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. Proposals can be submitted at any time until the final deadline of March 31, 2026, with additional details and requirements available in the associated documents and on the NASA solicitation website. For inquiries, interested parties can contact the grantor at hq-scubed@mail.nasa.gov.