How many black holes are there in the observable universe? A new study has investigated the demographics of stellar mass black holes and tried to estimate the number of stellar-mass black holes in the whole universe.
Black Hole: The Basics
Do Black Holes Really Exist?
How Large Are Black Holes?
Black Hole News 2021: Close Study of Black Hole Jets, Storm, Tsunami, & Collision.
The Black Hole Mass Function Across Cosmic Times. I. Stellar Black Holes and Light Seed Distribution
There are 40 billion billions of Black Holes in the Universe!
There are 40 billion billions of Black Holes in the Universe
40 Billion Billions Black Holes
Thumbnail Credit: Samuel Krug