How Many Black Holes Before the Universe Needs a Vacuum?
Did you know the universe is absolutely packed with black holes? Scientists estimate that over 100 million black holes are scattered throughout the observable cosmos. That’s right—more than one hundred million of these invisible, cosmic vacuum cleaners are lurking among the stars!
Most of them are “stellar-mass” black holes, formed when massive stars collapse under their own gravity. But some are supermassive, sitting in the centers of galaxies and weighing millions—even billions—of times more than our Sun. They're everywhere: hiding in galaxies, floating in space, and possibly even passing near our solar system from time to time (don’t worry—they’re socially distant).
And here's the fun part: that's just in the observable universe. The real number? Probably way higher. So next time you look up at the stars, remember—behind the glitter and glow, the universe is quietly hoarding black holes like cosmic trophies.