Dec 10, 2025

Refreshed Website

A refreshed version of the Fermi website (fermi.gsfc.nasa.gov) went live yesterday. The update enhances navigation, introduces new content, retires outdated pages, and brings the site into alignment with current U.S. government and HEASARC design standards.

If you notice any issues, missing material, or have suggestions for further improvements, please share your feedback using the Google form below. We plan to release another update in February 2026 informed by the community response.
+ https://forms.gle/4AQaPBUoRwzApNcz8

Apr 21, 2025

Fermitools 2.4.0 Released

An updated version (2.4.0) of the Fermitools is now available. Improvements focus on resolving issues with outdated dependencies and improving compatibility (e.g., Astropy). This release also includes a range of bug fixes, enhancements to backend code, and updates to the build system.
+ Release Notes

Feb 6, 2025

Cycle 18 Solicitation Amended

The Fermi Cycle 18 solicitation was amended on February 5 to clarify that the page limit for the Science/Technical/Management section of Phase-1 proposals is four pages for Regular proposals and six pages for Large proposals. These page limits include figures but not references. This is a change from Cycle 17 when the 4- and 6-page limits included references. As a reminder, the solicitation was amended on January 17 to change the proposal due date to March 5, 2025. Full details of the Fermi Cycle 18 solicitation can be found in Roses Appendix D.6