2 ms·

plus: a way of generating energy (I think that one depends on spin?) and a way of accelerating spacecraft.

• rbanffy 5y ago
  Matter tends to glow in agony when falling into a black hole while the tidal forces shred its atoms apart. Tidal forces should be pretty rough at this size. The hard part of using a black hole for propulsion is that you’ll need to drag a planetary mass along. It’s an interesting engineering problem.
  • kadoban 5y ago
    There's also the Penrose process which is theoretically useful on spinning black holes. I also watched this in the past, which has some fun ideas (that are probably a little fanciful?) https://m.youtube.com/watch?v=ulCdoCfw-bY https://m.youtube.com/watch?v=ulCdoCfw-bY tl;dw: put a mirror around it and shine light in, get back lots of energy and/or blow up your whole solar system. I'm not sure if any of that would apply to a ~planet mass black hole spinning with ~planet sized angular momentum, or how solid the physics even is, but it sounds cool anyway.
    • rbanffy 5y ago
      > get back lots of energy and/or blow up your whole solar system. Fun concept - a bomb you can't throw without it dragging your world along.
  • Chris2048 5y ago
    wrt propulsion I meant a gravity assist, passing by the BH much closer than you would a planet.