• Question: how many black holes are there

    Asked by jamie543 to Peter on 15 Nov 2016.
    • Photo: Peter Boorman

      Peter Boorman answered on 15 Nov 2016:

      Hi Jamie543,

      Great question! No-one knows the exact number, and in fact people are trying to determine how many black holes there are in the Universe, in order to work out how many X-rays there are!

      Peter

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