15-years of discoveries with the Fermi-LAT

Since August 4, 2008, the Fermi Gamma-ray Space Telescope's Large Area Telescope (LAT, 50 MeV-1 TeV) has captured an array of extraordinary cosmic events—from our Solar System to the farthest reaches of the Universe. It has observed the Sun, the Moon, pulsars, supernova remnants, Galactic Bubbles, Active Galactic Nuclei (AGN), blazars, and high-energy gamma-ray bursts, uncovering some of the most energetic, transient, and rare phenomena in the cosmos. The Fermi-LAT has not only provided accurate measurements of the diffuse gamma-ray background and high precision measurement of the high-energy electron spectrum, but also conducted searches for indirect dark matter detection. Noteworthy achievements include the discovery of the brightest gamma-ray burst on record, identification of extragalactic neutrino emitters, and the capability to track and identify gamma-ray counterparts to gravitational wave events. This powerful observatory bridges the gap between astrophysics and particle physics. In this presentation, highlight key scientific discoveries made by the Fermi LAT over the past 15 years, showcasing its significant contributions to our understanding of the gamma-ray universe.