For decades, astronomers generally divided gamma-ray bursts into two categories based on their duration and origin. Now Swift and Fermi have detected a burst that breaks the rules, shaking up what we knew about the universe’s most powerful events: https://go.nasa.gov/3HiA6DP
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NASA Missions Probe Game-Changing Cosmic Explosion
On Dec. 11, 2021, NASA’s Neil Gehrels Swift Observatory and Fermi Gamma-ray Space Telescope detected a blast of high-energy light from the outskirts of a galaxy around 1 billion light-years away.Jeanette Kazmierczak (NASA)
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