2 ms·

Hawking radiation, I think. Yes, this is at best speculatively feasible.

• manphone 11mo ago
  Probably more like a water wheel - matter spinning around the hole can be accelerated.
  • Qem 11mo ago
    A spacecraft carrying a blackhole as propulsion means probably would have poor power to weight ratio.
    • idiotsecant 11mo ago
      Not at all. It would have one of the best power to weight ratios possible. Now as to whether you could use all that power....