The Transiting Exoplanet Survey Satellite (TESS) General Investigator (GI) Program (ROSES-25 D.3D) solicits proposals for the acquisition and analysis of new scientific data from the TESS mission taken during Cycle 9 from Sector 108 starting September 7, 2026, to Sector 121 ending September 19, 2027. Additionally, proposals that support the acquisition and/or analysis of scientific data from ground-based telescopes are also solicited if they directly support the analysis and/or interpretation of TESS scientific data, either taken during Cycle 9 or in the archive.

ROSES-2025 Amendment 33 releases final text for TESS GI and announces that the Phase-1 due date, which was previously TBD is March 10, 2026 (via ARK RPS).

On or about December 22, 2025, this Amendment to the NASA Research Announcement "Research Opportunities in Space and Earth Sciences (ROSES) 2025" (NNH25ZDA001N) will be posted on the NASA research opportunity homepage at https://solicitation.nasaprs.com/ROSES2025

Programmatic questions concerning TESS GI may be directed to John Wisniewski at [email protected] and Joshua Pepper at [email protected]. Technical questions concerning this program may be directed to Tyler Pritchard at [email protected].