GPT-4: Astronomers have observed a massive explosion caused by the collision of two ancient star remnants in a galaxy 3 billion light-years away. The event, GRB 191019A, was detected by the Neil Gehrels Swift Observatory and studied using the International Gemini Observatory, the Nordic Optical Telescope, and the Hubble Space Telescope. The discovery provides insight into how stars die and could help identify unexpected sources of gravitational waves.
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