The Planetary Science Advisory Committee (PAC) supports, under FACA rules, the needs of the Planetary Science Division (PSD), the Science Mission Directorate (SMD) and other mission directorates as required, and the NASA Administrator.
NASA’s planetary science missions near the end of their prime mission (PM) or extended mission (EM) may propose an extension. These extended missions can leverage NASA’s large investment in order to perform continued science operations at a cost far lower than developing a new mission. In some cases, the extensions allow missions to continue to acquire valuable long-duration datasets, while in other cases, EMs allow missions to visit new targets, with entirely new science goals. The ‘Senior Review’ of these proposals typically happens every three years, by a panel made of experts from academia, NASA, and industry.
This still from an animation of four images shows Jupiter in infrared light as seen by NASA's InfraRed Telescope Facility, or IRTF, on May 16, 2015. The observations were obtained in support of NASA's Juno mission.
Assessment of NASA’s Nexus for Exoplanet System Science (NExSS) Research Coordination Network (RCN)
This artist’s concept Kepler-47, the first two-star systems with multiple planets orbiting the two suns, suggests just how difficult the road ahead will be.
NASA / JPL-Caltech / T. Pyle
Community White Papers
Landed Mercury Science
White Paper on the Case for Landed Mercury Exploration and the Timely Need for a Mission Concept Study
The Value of NASA Participating Scientist Programs to NASA PSD
Mercury Science Questions
High-priority Science Questions about Mercury
PSD Community Announcements
Thank You to Reviewers
Thank you note to reviewers from Planetary Science Division Director Lori Glaze (July 7, 2021)
NASA Venus Science Group
NASA has selected six scientists to serve on the newly established Venus Science Coordination group, a joint committee of NASA and ESA to identify new, unanticipated scientific approaches and outcomes based on synergies among the missions to Venus and to suggest studies to enhance their overall scientific return.
Draft Working Documents
Lunar Science Strategy
DRAFT: Implementation Plan for a NASA Integrated Lunar Science Strategy in the Artemis Era (11/14/2023)