NASA Headquarters is offering a federal grant opportunity titled "ROSES 2024: B.13 Heliophysics U.S. Participating Investigator," aimed at supporting research in heliophysics as part of its annual Research Opportunities in Space and Earth Sciences (ROSES) program. Eligible applicants must be affiliated with U.S. institutions, and the funding will primarily be awarded as grants, with a typical performance period of three years, although some projects may extend up to five years. This opportunity is crucial for advancing scientific knowledge in space and Earth sciences, and interested parties must submit their Step-1 proposals by January 29, 2025, with further details available in the solicitation documents. For inquiries, contact Simon Plunkett at simon.p.plunkett@nasa.gov or call (202) 358-2034.