• Question: Do black holes actually lead to another Galaxy

    Asked by 964sptm26 to Angus, Christine, Guy, Hermine, Ollie on 9 Mar 2018.
    • Photo: Alexander Burke

      Alexander Burke answered on 9 Mar 2018:

      Probably not. I believe that black holes (as long as they spin) are portals to a new universe, which runs parallel to ours. I do not believe that black holes are portals to other galaxies… the best contender for that would be a wormhole!

    • Photo: Guy Rixon

      Guy Rixon answered on 14 Mar 2018:

      I’ve just read the Wikipedia entry on wormholes – which is screamingly complex even without the heavy maths – and IIUC a collapsed object can either give a wormhole or a black hole but not both. So I don’t really understand Alexander’s point about black holes as portals. That’s not surprising: I’m an engineer, not a relativity theorist.
      One thing occurs to me: if black holes are portals to other universes, then other universes would have portals to our universe too. What would then look like? If they are lit up with hot gas that got squeezed by the black hole on the far side, then we should see the portals on our side: they owuld be bright.

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