Radiation Blast May Have Hit Earth In Middle Ages

American VoicesOpinion ISSUE 49•04 Jan 23, 2013

A new report posits that the collision of two black holes or neutron stars may have produced a gamma ray burst that hit Earth in the 8th century, generating a variety of chemical isotopes that can be found in ancient tree rings and ice cores. What do you think?

  • “‘May have?’ Wow!”

    Silvio Mazzotti –
    Spindle Repairer

  • “I’ve always wondered where all these isotopes came from.”

    Penney Scott –
    Quill Cleaner

  • “Wow, tree rings just keep getting more and more interesting.”

    Don Gallardo –

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