Registration is now open for the Community Science (Ad ASTRA) Workshop to engage the community in defining future large, strategic astrophysics missions. The workshop will take place in Pasadena, CA on 1-3 September 2026. In-person attendance will be limited by venue capacity to approximately 250 people, but virtual participation will also be possible. The hotel room block is available.

The block agenda for the Ad Astra workshop is now available on the meeting website. Day 1 of the workshop will be devoted to Science, Day 2 to Capabilities, and Day 3 to synthesizing the discussion. The deadline for submitting abstracts is 24 June 2026. Contributed talks and posters are welcomed on science questions that mission concepts presented at this meeting could address, as well as new astrophysics questions that have emerged since Astro 2020. Submissions that highlight the capabilities and enabling technologies needed to advance these open questions are especially encouraged, particularly where they help connect scientific goals to future mission concepts.

The local workshop webpage has been updated with new information, including:

• Registration information (in-person registration is free, but has a deadline of 15 August 2026)
• Travel and accommodation information (including a hotel block)
• An abstract submission form (submission deadline 24 June 2026).

To make sure that you receive updates about these activities, be sure to join the new workshop mailing list by sending an email to Ad-ASTRA-join@lists.nasa.gov with Subject="join".