Fermi's Gamma-Ray Burst Monitor

The Fermi Gamma Ray Space Telescope is designed to detect gamma ray bursts, which are bright flashes from the collapse of massive stars. The Gamma Ray Burst Monitor (GBM) is an instrument on the telescope that uses detectors to collect data from these bursts. By analyzing which crystals in the detectors light up, scientists can determine the direction of the gamma ray bursts. This process, known as localization, helps inform other telescopes where to look. Observations from the GBM provide valuable insights into the brightest explosions in the universe, enhancing our understanding of these phenomena.

Explain the significance of gamma rays being described as the 'first light' detected from a gathering burst.

How do GBM observations contribute to our understanding of the universe?