NASA Headquarters is offering a federal grant opportunity titled "ROSES 2025: C.15 Planetary Protection Research," aimed at advancing research in planetary protection. Proposals are invited from eligible applicants affiliated with U.S. institutions, with specific guidelines for non-U.S. organizations, as detailed in the NASA Proposer's Guide. This program 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 no cost-sharing requirement, and interested parties can direct inquiries to David J. Smith at HQ-PPR@mail.nasa.gov for further information.