Amendment 25: New Opportunity: C.27 Lucy in the L4 Trojans Participating Scientist Program.

The purpose of C.27 Lucy in the L4 Trojans Participating Scientist Program (Lucy-L4-PSP) is to enhance the scientific return of the Lucy mission through new investigations that broaden and/or complement Lucy’s primary investigations, conducted during and immediately following the spacecraft’s encounters with objects in the L4 swarm of the Jupiter Trojan asteroids. The Lucy-L4-PSP solicits proposals for science investigations or other scientific contributions to the Lucy mission that directly address outstanding questions in planetary science related to the Jupiter Trojan asteroids and, specifically, to the bodies that the Lucy spacecraft will encounter in the L4 swarm in 2027 and 2028.

ROSES-2024 Amendment 25 adds a new program element to ROSES-2024: C.27 Lucy-L4-PSP. Mandatory NOIs are due August 19, 2024, and proposals are due October 2, 2024.

The S/T/M Section of proposals is limited to ten pages.

Proposals submitted to this program will be evaluated using a dual-anonymous peer review process. See Section 3.3 and the associated "Guidelines for Anonymous Proposals" document under "Other Documents" on the NSPIRES page for this program element.

On or about July 3, 2024, this Amendment to the NASA Research Announcement "Research Opportunities in Space and Earth Sciences (ROSES) 2024" (NNH24ZDA001N) will be posted on the NASA research opportunity homepage at and will appear on SARA's ROSES blog at:

Questions concerning C.27 Lucy-L4-PSP may be directed to Thomas S. Statler at

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