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This view shows the entire sky at energies greater than 1 GeV based on five years of data from the LAT instrument on NASA's Fermi Gamma-ray Space Telescope. Brighter colors indicate brighter gamma-ray sources.
Latest events

Fermi Summer School

Fermi Summer School will be May 26 to June 5, 2026.

Announcements

Jan 14, 2026

Fermi Summer School 2026

Registration is now open for the Fermi Summer School 2026. The application deadline is February 6, 2026. However, we have a limited number of positions at the school and early applications will be favored.

Jan 5, 2026

Fermi Cycle 19 Proposal workshop, including TOOs

The Fermi Science Support Center (FSSC) is hosting a virtual proposal workshop on 14 January 2026 from 2:00-3:30PM EST. Full details, including a link to the registration form, can be found on the Workshop Page. The workshop will include details of the updated Target of Opportunity (TOO) program. Please register by 10AM EST on Jan 14 so that we can send you the details to join the virtual meeting.

Dec 18, 2025

Fermitools 2.5.0 Released

An updated version (2.5.0) of the Fermitools is now available. A large number of changes have been made focusing on resolving issues with dependencies, internal tool testing and validation, and resolving outstanding issues. These changes include packaging a set of external dependencies with the tools for improved build and installation performance, a range of bug fixes and enhancements to backend code, and a complete overhaul of the FSSC build system.
+ Release Notes

Observations

Fermi Observations for MW 923

Mission Week 923 begins with a continuation of the symmetric +/-50 deg. profile from the previous week. Then, on DOY 36 (2026-2-5) at 00:59 UT a 10-minute freeze observation occurs during which a symmetric +/-50 deg. profile is loaded. This profile continues until the end of the mission week. The survey repeat period is based on a 5668s orbital period. Note that positive rock angles are south, and negative rock angles are north.

» More Timeline Info

The FSSC

The Fermi Science Support Center (FSSC) runs the guest investigator program, creates and maintains the mission time line, provides analysis tools for the scientific community, and archives and serves Fermi data.

FSSC People

News Archive

Proposers

Guest Investigator Program - Details of the Cycle 19 Call for Proposals, deadline Jan 29 2026.

Targets of Opportunity (ToO) - How to apply for a ToO.

Analysis

New Users - Overview of Fermi analysis basics.

Data & Products - Download Fermi data and access data products such as catalogs.

Analysis Tools - Tools from the FSSC and the user community.

Analysis Threads - Step-by-step guides to various types of analyses that you can do with Fermi data.

Multiwavelength Coordination and Existing Data - Links to related datasets and coordination resources.

The Observatory - Key information about Fermi and its capabilities required for analysis.

Science

Research Highlights - Major Fermi research areas and links to publications and press releases.

Transient Science - Resources for transient and time domain science.

Community

Fermi Users' Group - External advisory body that provides input and perspectives from relevant science communities and members to the Fermi Project.

Fermi Summer School - Annual summer school aimed at graduate students and post-doctoral researchers.

Fermi Meetings - Links to summer schools, symposia, and workshops.