The Exoplanet Exploration Program Analysis Group (ExoPAG) is responsible for soliciting and coordinating community input into the development and execution of NASA’s Exoplanet Exploration Program (ExEP). It serves as a community-based, interdisciplinary forum for soliciting and coordinating community analysis and input in support of the Exoplanet Exploration Program objectives and of their implications for architecture planning and activity prioritization and for future exploration. It provides findings of analyses to the NASA Astrophysics Division Director.

Executive Committee:

ExoPAG activities and meetings are organized through an Executive Committee, selected by NASA HQ through a Dear Colleague letter. Appointments are made annually to replace members rotating off; the normal term is 3 years. If you are interested in serving on the Executive Committee, please contact the ExoPAG Executive Secretary at NASA HQ (Hannah Jang-Condell, Deputy Exoplanet Exploration Program Scientist).

New Executive Committee members for 2021: Michael Bottom, Ofer Cohen, Knicole Colon, Ilaria Pascucci.

ExoPAG News and Announcements (November 4, 2021)

  1. Astro 2020 Decadal Survey Report Released
  2. ExoPAG 25 (January 8-9, 2022) and Opportunity for Early Career Scientists, Postdocs and Graduate Students to Present Talks (Deadline 8pm ET/5pm PT *Friday November 5, 2021*)
  3. Call for Nominations to the Executive Committee of the Exoplanet Exploration Program Analysis Group (ExoPAG) (Deadline January 21, 2022)
  4. Biosignature Standards of Evidence White Paper (Comment period closes November 10, 2021)
  5. ExEP Postdoctoral Research Associate (Application deadline December 9, 2021)
+ more

1) Astro 2020 Decadal Survey Report Released

“Pathways to Discovery in Astronomy and Astrophysics for the 2020s”

2) ExoPAG 25 (January 8-9, 2022) and Opportunity for Early Career Scientists, Postdocs and Graduate Students to Present Talks (Deadline 8pm ET/5pm PT *Friday November 5, 2021*)

NASA's Exoplanet Exploration Program Analysis Group (ExoPAG) will hold its twenty fifth meeting on Saturday and Sunday, January 8-9, 2022, immediately preceding the 239th AAS Meeting both virtually and in Salt Lake City, Utah. ​The agenda will include discussion of the Astro 2020 Decadal Report, programmatic updates of relevance for the ExoPAG community, science updates and descriptions of exciting new capabilities, updates from SIGs and SAGs, as well as our regular business meeting.

The ExoPAG 25 meeting registration (please RSVP) and draft agenda are now posted at:

ExoPAG meetings offer an opportunity to participate in discussions of scientific and technical issues in exoplanet exploration, and a forum for community input on the prioritization of activities in NASA's Exoplanet Exploration Program (ExEP). All interested members of the space science community are invited to attend and participate. Suggestions for topics and/or speakers at the meeting along these lines are welcome.

The ExoPAG and NASA's Exoplanet Exploration Program (ExEP) Office invites early career scientists, postdocs and graduate students to present at the ExoPAG 25 meeting (Jan. 8-9, 2022; talks can be either in-person or virtual). We are particularly interested in presentations from early career scientists, postdocs, and graduate students from diverse backgrounds.

Those who wish to propose short talks (8-12 minutes) should submit an online application on the early career science talk page: The form includes a one paragraph abstract (no figures), and 1-2 sentences describing how your research is relevant to the Exoplanet Exploration Program and how would attending the conference benefit your research and planned future career. The deadline to submit proposed contributions is 8pm ET/5pm PT on Friday November 5, 2021. Successful applicants will be notified the week of November 15, 2021.

3) Call for Nominations to the Executive Committee of the Exoplanet Exploration Program Analysis Group (ExoPAG) (Deadline January 21, 2022)

"Dear Colleagues:

The Astrophysics Division of NASA’s Science Mission Directorate is pleased to issue this open call for nominations to serve on the Executive Committee (EC) of NASA’s Exoplanet Exploration Program Analysis Group (ExoPAG). In the coming months, NASA anticipates making four new appointments to the ExoPAG EC, replacing three to four current members of the committee who have reached the end of their appointments. New appointments will start in the Spring of 2022 and will be for a period of three years.

The ExoPAG is an open, interdisciplinary forum that provides a conduit for community input into NASA’s Exoplanet Exploration Program (ExEP,, and for conducting analyses in support of ExEP science objectives and their implications for planning and prioritization of Program activities. The ExoPAG is led by a Chairperson drawn from the membership of the Astrophysics Advisory Committee (APAC), and a volunteer Executive Committee, whose membership is chosen to reflect the broad range of scientific disciplines and interests represented in the field of exoplanet exploration. Together, the ExoPAG Chair and Executive Committee are responsible for capturing and organizing community input, overseeing ExoPAG analyses, reporting ExoPAG findings and inputs to the Astrophysics Division Director, and keeping the scientific community apprised of ongoing activities and opportunities within NASA’s ExEP. Detailed information about the structure and function of the ExoPAG, including the current and past membership of the EC, can be found at

Nominations for the ExoPAG EC should be submitted via email to the address: Nominations must include both a cover letter and a one-page CV summarizing the nominee’s relevant background. The cover letter should provide a description of the nominee’s area of expertise, qualifications for service, and anticipated contributions to the ExoPAG Executive Committee. Nominations will only be accepted for scientists who reside at a U.S. institution for the period of the service. There are no citizenship restrictions. Nominations from individuals at academic institutions— university, college, or non-NASA research laboratory—are strongly encouraged. Self-nominations are welcome. The deadline for nominations is January 21, 2022, with announcement of selections anticipated in April 2022. Selections will be announced by the ExoPAG mailing list (

We look forward to working with all of our stakeholders to develop a robust and compelling Exoplanet Exploration Program.

Dr. Hannah Jang-Condell, NASA Headquarters
Deputy Exoplanet Exploration Program Scientist, ExoPAG Executive Secretary"

4) Biosignature Standards of Evidence White Paper (Comment period closes November 10, 2021)

"Dear Exoplanet Community,

In July, 2021 the Nexus for Exoplanet System Science (NExSS) and the Network for Life Detection (NfoLD) Research Coordination Networks hosted a community workshop on Biosignature Standards of Evidence. During this workshop, participants developed a generalized framework for biosignature detection and assessment, and discussed and identified best practices needed to develop a reporting protocol for potential biosignature detection.

The participants have now completed a draft white paper report summarizing the workshop discussions and major findings. The white paper sections describe the motivation for community development of biosignature assessment and reporting protocols, a description of the generalized assessment framework, worked examples of how the framework could be applied for specific biosignatures and measurement techniques, a discussion of how the framework can be applied throughout a spaceflight mission life cycle, discussions on the reporting protocol development, and a summary of key takeaways and future work.

The workshop participants are now soliciting community comments and offering members of the scientific community the opportunity to co-sign the white paper on this website The comment period will close on November 10th.

Vikki Meadows and Heather Graham, on behalf of the Biosignature Standards of Evidence Workshop Participants."

5) ExEP Postdoctoral Research Associate (Application deadline December 9, 2021)

The NASA Exoplanet Exploration Program (ExEP) Office at the Jet Propulsion Laboratory invites applications for a postdoctoral research scholar interested in exoplanet-related research and programmatics.

The successful candidate will work with the Program Chief Scientists to support the definition and implementation of current & future exoplanet space observatories and their required precursor science. Preferred research areas are defined by the ExEP Science Gap List and include: analyses of exoplanet demographics, host star properties, exozodiacal dust, simulations of mission science return and signal extraction, methods to mitigate stellar jitter in radial velocity datasets, instrumentation for high contrast imaging or precision RV work, or modeling of exoplanetary atmospheres and biosignatures. Research connected to the exoplanet priorities of the Astro2020 Decadal Survey is especially encouraged. The appointee will be expected to divide their time between program-related activities and independent exoplanet research. Both facets of the position include interfacing with the science community and the general public.

The ExEP Office works with NASA HQ to implement the Agency's science vision for exoplanets with a portfolio of science analyses, technology development, mission concept development, and supporting ground-based observations. ExEP is a unique environment at the intersection of NASA science, policy, technology, engineering, and public engagement, all focused on the goals of discovering exoplanets, characterizing their properties, and identifying candidates that could harbor life. For further information on current ExEP activities and staff expertise, visit

ExEP Program Scientists Drs. Karl Stapelfeldt and Eric Mamajek, will serve as advisors for the successful candidate. The appointee will carry out research in coordination with the advisors, resulting in publications in the open literature. A travel funding allowance will be provided. The selected candidate will be hosted within the NASA ExEP Office, but have an organizational home in the Astrophysics & Space Sciences Section of the JPL Science Division.

Candidates should have a Ph.D. in astronomy or planetary science. Candidates with an interest in science management are especially encouraged to apply. Candidates should familiarize themselves with ExEP Program Science Gap list (linked at and propose a research plan congruent with these science priorities and the candidate's independent exoplanet research.

The application deadline is December 9, 2021. Please see additional details at:

ExEP Science Gap List (2021)

ExoPAG News and Announcements - Archive


The Nexus for Exoplanet System Science (NExSS) is a research coordination network whose role is to form a cohesive community of exoplanet researchers that transcends disciplines and funding stovepipes. It is led by teams funded by NASA Research & Analysis Programs from the Astrophysics, Planetary Science, Heliophysics and Earth Science Divisions that conduct interdisciplinary exoplanet research. NExSS helps lead or facilitate white papers, workshops, conferences, science and communications working groups, and other community activities that support exoplanet research.

ExoPAG overview top image - PIA23002 K2-138 6 Planets Artwork