Fermi's Gamma ray Burst Monitor

The Gamma-ray Burst Monitor (GBM) is one of the instruments aboard the Fermi Gamma-ray Space Telescope. The GBM studies gamma-ray bursts, the most powerful explosions in the universe, as well as other flashes of gamma rays. Gamma-ray bursts are created when massive stars collapse into black holes or when two superdense stars merge, also producing a black hole.

The GBM sees these bursts across the entire sky, and scientists are using its observations to learn more about the universe.

Credit:
NASA's Goddard Space Flight Center.
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