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    "Astronomers missed a space explosion as powerful as a Billion Suns until they spotted its echo".A core collapse Supernova births a Black hole and launches a Gamma ray burst.
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    “Astronomers missed a space explosion as powerful as a Billion Suns until they spotted its echo”.A core collapse Supernova births a Black hole and launches a Gamma ray burst.


    “Astronomers missed a space explosion as powerful as a Billion Suns until they spotted its echo”.A core collapse Supernova births a Black hole and launches a Gamma ray burst.

    https://www.space.com/astronomy/astronomers-missed-a-space-explosion-as-powerful-as-a-billion-suns-until-they-spotted-its-echo

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    1. huistenbosch on

      A gamma ray burst would be a very bad thing to hit us head on. I’m happy that we just see echoes.