What’s The Closest Place We Can Live Near a Black Hole?

A planet could, in theory, orbit just outside a supermassive black hole’s event horizon and stay warm enough for liquid water, thanks to the black hole’s bizarre effect on cosmic background radiation. Keep watching, because I’ll reveal exactly how time would pass for life on such a world—and why a single day there could outlast all of human history.
Let’s start with the basics: black holes are famous for being the ultimate cosmic destroyers, but what if they could also be unlikely cradles for life? The idea sounds like pure science fiction, but recent research has uncovered a scenario so strange it almost feels like a cosmic loophole. Around the largest, fastest-spinning black holes—those with masses over 160 million times that of our Sun—there’s a razor-thin orbital band where the rules of physics get turned inside out. Here, the black hole’s immense gravity bends and amplifies the cosmic microwave background, the faint glow left over from the birth of the universe, until it becomes as warm as a summer’s day on Earth. This isn’t just a theoretical curiosity; calculations show that, in this narrow region, a planet could actually have liquid water on its surface, the gold standard for habitability as we know it.
Credit to : Insane Curiosity