Cosmic Origins
Searching for answers about our universe and its origins

Program News and Announcements

18 October 2023

Last Call! JWST Call for Proposals for Cycle 3 | Due October 25th by 8:00p ET (US)

We invite scientists to participate in Cycle 3 of the James Webb Space Telescope (JWST). The telescope and its instruments were built under the auspices of the National Aeronautics and Space Administration (NASA), the European Space Agency (ESA), and the Canadian Space Agency (CSA). Management of JWST's scientific program is carried out by the Space Telescope Science Institute (STScI). We anticipate allocating up to 5,000 hours in this cycle. In Cycle 2, the split between size categories was 2,350 hours for Small programs (≤ 25 hours), 1,750 for Medium programs (> 25 and ≤ 75 hours), and 900 for Large programs (> 75 hours). The Cycle 3 allocations are subject to adjustment based on proposal pressure. Abstracts of previously accepted programs can be found on the JWST proposal catalogs webpage.

Proposing calendar and deadlines

Cycle 3 dates: July 1, 2024June 30, 2025
Cycle 3 proposal deadline: October 25, 2023, by 8:00pm US Eastern Daylight Time
Cycle 3 Peer Review meeting: January 29February 8, 2024
Cycle 3 Budget submission deadline: April 11, 2024, by 5:00pm US Eastern Daylight Time
Notification of the outcome of the selection process will be sent to all proposers in late February/early March 2024.

Where to get help

More information can be found on the JWST cycle 3 proposal page here: JWST Call for Proposals for Cycle 3

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