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  • BBC Science Focus Magazine

    THE EXPLAINER HAWKING RADIATION

    Jan 20, 2022 3 minutes
    by ALASTAIR GUNN

    WHAT IS HAWKING RADIATION?

    In the 1970s, physicist Stephen Hawking tried to answer an apparently simple question: do black holes have a temperature? His analysis led to the concept which now bears his name: Hawking radiation. Not only did Hawking show that black holes radiate energy, he showed that they shrink incredibly slowly and eventually explode in a flash of gamma rays.

    The idea of Hawking radiation is based on the fact that empty space isn’t actually empty. This is perhaps a difficult

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