Apr 25, 2023

Amendment 18: C.25 Hera Participating Scientist Program TBD Placeholder

The Hera mission is Europe’s contribution to the international planetary defense demonstration that was initiated by NASA’s Double Asteroid Redirection Test (DART). Hera is planned to launch in 2024 and arrive at the Didymos system in 2026 to perform a close-up survey of both asteroids, measuring their masses and compositions, and assessing the changes caused by DART. If solicited, C.25 Hera Participating Scientist Program (PSP) will be the sole vehicle by which NASA will support U.S. scientists participating on the Hera Investigation Team as international members.

ROSES-2023 Amendment 18 adds a TBD placeholder for the new program element C.25 Hera Participating Scientist Program (PSP). If proposals are solicited, it is anticipated that the final text for this program element will be released no fewer than 90 days prior to the proposal due date.

On or about April 25 2023, this Amendment to the NASA Research Announcement "Research Opportunities in Space and Earth Sciences (ROSES) 2023" (NNH23ZDA001N) will be posted on the NASA research opportunity homepage at

Questions concerning C.25 Hera PSP may be directed to Thomas Statler at