how many black holes are predicted to be in space in total ?

Question: how many black holes are predicted to be in space in total ?
- Keywords:
  black hole,
  prediction,
  space
Asked by baas535gnat2 to stephaniebuttigieg, christinaschoettler on 23 Oct 2025.
- Christina Schoettler answered on 23 Oct 2025:
  
  There is a prediction for the number of stellar-mass black holes (even though black holes can exist at many different masses). Scientists have calculated that there might be 40 billion billion black holes in the universe.

Question: how many black holes are predicted to be in space in total ?