NASA Headquarters is offering a federal grant opportunity titled "ROSES 2025: C.21 Yearly Opportunities for Research in Planetary Defense." This grant aims to support research and development in planetary defense, with a focus on proposals affiliated with U.S. institutions, although some provisions exist for non-U.S. organizations under specific guidelines. The opportunity is part of NASA's broader Research Opportunities in Space and Earth Sciences (ROSES) initiative, which encompasses various program elements aimed at advancing scientific knowledge and technology in space and Earth sciences. Interested applicants must submit a Step-1 proposal by April 17, 2025, followed by a Step-2 proposal due on June 18, 2025, and can find additional details and necessary documents at the provided NASA links. For inquiries, applicants can contact Julie Ziffer, Kelly Fast, or Adelle Helble at HQ-YORPD@mail.nasa.gov.