-1

According to this answer: https://physics.stackexchange.com/a/150020/36709

Very "light" black holes have a life expectancy in the range of $10^{18}$ years while very "heavy" black holes have a life expectancy between $10^{12}$ or so years.

  • Stephen Hawkings book Black Holes and Baby Universes.

How heavy would a black hole have to be to have a life expectancy, so that it could have ended life within the time frame of our universe?

What is the relationship between life expectancy of a black hole and its mass?

Community
  • 1
frodeborli
  • 492
  • 2
  • 9

1 Answers1

1

The time for a black hole with mass M to evaporate is proportional to M^3.

Here is a detailed description: https://en.wikipedia.org/wiki/Hawking_radiation#Black_hole_evaporation

ScienceAndPhilosophy
  • 173
  • 8