• Question: How long does a black hole travel a year?

    Asked by Tom the bomb to Chinna on 7 Nov 2018.
    • Photo: Chinna

      Chinna answered on 7 Nov 2018:

      Different black holes move at different speeds. For example, a black hole named GRO J1655-40 is streaking across space at a rate of 400,000 kilometres per hour. So, in a year we have 365 times 24 hours. So this particular black hole goes at a speed of 3504000000 kilometres. That is almost travelling from earth to sun 25 times a year.

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