• Question: What's at the bottom of a black hole?

    Asked by 481yttc25 to Anna, Hayley, Iain, Rebecca on 15 Jun 2015. This question was also asked by Jasmine Y, 477yttc42, kitkat, aka Agent Jellybean, kizrarox.
    • Photo: Iain Bethune

      Iain Bethune answered on 15 Jun 2015:

      Not sure about the ‘bottom’, but the centre of a black hole is a Singularity, a point where mass is infinitely concentrated (infinite density), or space time becomes infinitely curved. In any case, the laws of physics as we know them don’t exactly define what happens here. Singularities are predicted by General Relativity (which explains gravity, and how the universe behaves at large scales), but the state of infinite density is forbidden according to Quantum Mechanics (the theory that explains how very small, fast particles behave). Unifying these two theories is the current grand challenge in Physics.

    • Photo: anon

      anon answered on 15 Jun 2015:

      I’ve found this website, which – to be honest – just adds to the confusion, but has some really cool pictures 😉 http://functionspace.com/topic/163/What—s-at-the-bottom-of-a-black-hole-

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