2023 Sagan Exoplanet Summer Hybrid Workshop

Characterizing Exoplanet Atmospheres: The Next Twenty Years

July 24-28, 2023
Hosted by The NASA Exoplanet Science Institute, California Institute of Technology, Pasadena, CA


Some of the 2023 Sagan Summer Hybrid Workshop In-Person and Online Attendees (click to download full res image)

Observations of an exoplanet's atmosphere provide the best hope for distinguishing the makeup of its outer layers, and the only hope for understanding the interplay between formation, natal composition, chemical and disequilibrium processes, and dynamics & circulation. The field is entering a revolution in our understanding of exoplanet atmospheres thanks to measurements from the ground, from space, and particularly from the new JWST – the superlative facility for exoplanet studies. In the longer term, such observations will also be essential for seeking signs of biosignature gasses in nearby exoplanets using future, next-generation observatories.

This year's workshop will cover theoretical modeling, interpretation, and observations of exoplanets using a variety of telescopes, techniques, and hands-on exercises, presented by leading experts in the field.

The 2023 workshop was hybrid with both in-person and on-line attendance.

The Sagan Summer Workshops are aimed at advanced undergraduates, grad students, and postdocs, however all are welcome to attend. There is no registration fee for these workshops.

Attendees participated in hands-on tutorials and had the chance to meet in smaller groups with our speakers.

All participants must follow this Code of Conduct.


Hands-On Sessions and Other Resources

Posters and POPs - July 14 submission deadline (closed)

Request a Letter of Attendance (closed)

Submit Your Headshot for the Class Photo (closed)

Workshop Survey (closed)

Sagan Workshop List of Participants (in person) (remote)

EXCALIBUR Workshop List of Partcipants (in person) (remote)

Venue and Lodging Information

COVID Policies


The 2023 Sagan workshop will be a hybrid workshop from July 24-28, 2023. There is no registration fee to attend the workshop in person or remotely. Register using this link

On Saturday, July 29 there will be a half-day workshop on EXCALIBUR, a new tool for comparative planetology. More information on this optional workshop can be found here. Please indicate your interest in attending the EXCALIBUR workshop when you register for the 2023 Sagan workshop. There is no fee to attend the EXCALIBUR workshop and it will also be a hybrid format.

For remote attendees, we will stream the workshop sessions live and have a Slack channel for remote questions that we will try to answer during the live talks, though the conversation can continue on Slack. All talks will be available on our YouTube channel following the workshop. We will do our best to accommodate remote attendees, but please note that the support for and ability to ask questions about the hands-on sessions may be limited.

All attendees will have the opportunity to request a letter of attendance following the workshop.

Food Ordering (July 13 deadline)

We will have light snacks at the Opening Gathering on Sunday afternoon in Dabney Gardens.

Lunches: $13 each, options listed on food ordering page All attendees can order a box lunch whether they are joining in a lunch with speaker or not. Lunches will be delivered to Dabney Gardens where the lunch with speakers will take place.

Our speakers will have lunch with up to 10 attendees during the workshop and we have also set up virtual meetings with our speakers for remote attendees. The sign-up for both in-person and virtual meetings with speakers was sent out by email; contact us if you need us to send it again.

Monday and Thursday Workshop Dinners: $30 per person per dinner We have arranged to have two outdoor dinners during the workshop on Monday and Thursday. These will take place in Dabney Gardens and will start at 5:30 pm. Attendance is optional but we hope you'll join us.

Vaccine Verification

In compliance with current Caltech requirements, all in-person attendees must have received a WHO recognized COVID-19 vaccine and booster.

We are using CrowdPass to verify each in-person attendee's vaccination status. After you register and indicate that you plan to attend the Sagan and/or EXCALIBUR workshop in person, the following steps will happen:

  1. Within 3 weeks of your registration, we will send you a link to start the CrowdPass vaccine verification process.
  2. Register for CrowdPass using the same email address that you used to register for the workshop.
  3. Upload your COVID-19 vaccination card.
  4. CrowdPass will verify your vaccination status and notify you of the result.
  5. Once your vaccination status is verified, your in-person attendance at the workshop will be confirmed by NExScI.

Travel Support Applications due March 23

Limited travel support is available for graduate student and postdoctoral associates. The amount of travel support that we can offer is very limited and is only for local costs (hotel and per diem). We cannot provide airfare and applicants are encouraged to seek other sources to augment any travel funds NExScI can provide.

Click here for the travel support application.

Each application must be accompanied by a letter of recommendation that should be submitted here. The letter should include a short statement about how the student will benefit from attending the workshop and an indication of financial need, including other possible sources of funding.

Important Dates in 2023

  • February 16: Registration and Travel Support Application sites available. Please read the information above for important information about registration.
  • March 23: Travel Support Applications and Recommendation Letters due to NExScI by 5 pm PDT
  • April 14: Travel Support decisions announced via email
  • May 24: Deadline for NASA and JPL employees to forecast their attendance (NCTS #47830-23)
  • June 1: POP/poster submission site, speaker meetings sign-ups, and food ordering site available
  • June 23: Pasadena Hotel room reservation deadline
  • July 14: Deadline for Poster/POP Submissions and Food Ordering
  • July 18: Final agenda posted with POP schedule
  • July 24-28: 2023 Sagan Summer Workshop
  • July 29: EXCALIBUR Workshop
  • August 1: Letters of Attendance request site available
  • August 18: Deadline to request Letter of Attendance and to submit your photo for the class photo
  • mid-September: Letters of Attendance will be sent by this time

Scientific Organizing Committee

Local Organizing Committee

Ian Crossfield, Co-Chair (University of Kansas)

Tracy Chen (Caltech/IPAC-NExScI)

Tiffany Kataria, Co-Chair (NASA JPL)

Megan Crane (Caltech/IPAC-NExScI)

Chas Beichman (Caltech/IPAC-NExScI)

Dawn Gelino (Caltech/IPAC-NExScI)

Kevin Stevenson (Johns Hopkins University/APL)

Ellen O'Leary (Caltech/IPAC-NExScI)

Tom Greene (NASA Ames)

Melanie Swain (Caltech/IPAC-NExScI)

Laura Kreidberg (MPIA)

Jayne Birkby (University of Oxford)

Jonathan Fortney (UC Santa Cruz)

Renyu Hu (NASA JPL)

View presentations from previous summer workshops on the Sagan Summer Workshop YouTube Channel.

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Image credit: NASA/JPL-Caltech/T. Pyle (SSC)

(last updated June 18th, 2024 11:38:28)