The Fermi Gamma-ray Space Telescope is a space observatory launched in 2008 to study gamma rays, the highest-energy form of light. It helps scientists understand cosmic phenomena such as black holes, supernovae, and gamma-ray bursts. By observing these high-energy events, Fermi provides valuable insights into the universe's most extreme environments. Fermi consists of two main instruments: the Large Area Telescope (LAT) and the Gamma-ray Burst Monitor (GBM). The LAT detects gamma rays from various sources, while the GBM focuses on transient events like gamma-ray bursts. Together, they enable researchers to explore the origins and nature of gamma-ray emissions across the universe.