Name and Committee Code: Astronomy and Astrophysics Advisory Committee (#13883) (Hybrid).

Date and Time: September 24-25, 2026; 9:30 a.m.-5 p.m. (eastern).

Place: National Aeronautics and Space Administration (NASA) HQ, 300 E Street Southwest, Washington, DC 20546 (Hybrid).

This is a hybrid meeting. Members and the public may attend this meeting virtually via Zoom. Attendance information for the meeting will be forthcoming on the AAAC website: https://www.nsf.gov/​mps/​ast/​aaac.jsp.

Registration for the virtual meeting can be accessed via the following link: https://nsf.zoomgov.com/​webinar/​register/​WN_​CwoffJzGTv2-Yv-q5VmHlg.

Type of Meeting: Open.

Contact Persons: Dr. Louise Edwards, Program Director, Division of Astronomical Sciences, National Science Foundation, 401 Dulany Street, Alexandria, VA 22314; Telephone: 703-292-7597.

Purpose of Meeting: To provide advice and recommendations to the National Science Foundation (NSF), the National Aeronautics and Space Administration (NASA) and the U.S. Department of Energy (DOE) on issues within the field of astronomy and astrophysics that are of mutual interest and concern to the agencies. To prepare the annual report.

Agenda: To provide advice and recommendations to the NSF, NASA and DOE on issues within the field of astronomy and astrophysics that are of mutual interest and concern to the agencies. To prepare the annual report.