• JohnDClay@sh.itjust.works
    link
    fedilink
    arrow-up
    0
    ·
    6 months ago

    I don’t understand how the event horizon booms to be so large compared to it’s mass. And does a black hole suddenly pop into existence when that density is reached, or does it need to collapse or have some condensed distribution?

    • Something Burger 🍔@jlai.lu
      link
      fedilink
      arrow-up
      0
      ·
      6 months ago

      A black hole is an object so dense and heavy, even light can’t escape its gravity. Black holes appear when a star collapses and reaches the required density.

      • JohnDClay@sh.itjust.works
        link
        fedilink
        arrow-up
        0
        ·
        6 months ago

        Yeah I get that. But the video was saying a black hole the diameter of the solar system has an average density inside the event horizon of air. I was wondering if you need to compress it any, or if a solar system sized volume of air would already be a black hole, or would it need to collapse to a singularity first?

        • Something Burger 🍔@jlai.lu
          link
          fedilink
          arrow-up
          0
          ·
          6 months ago

          If the volume of air is big enough, it will be so heavy that it will act as a black hole. It doesn’t need to collapse first, although it probably will because of its own weight.