Black holes don't just swallow everything; they can change state, like water boiling or freezing. A new approach links the optical ring around a hole to its hidden thermodynamics. Soon we may be able to 'see' such transitions in distant black holes.
🎯 A black hole's entropy — its measure of disorder — grows with surface area, not volume. It's as if a room seemed messier because of the size of its walls, not what's inside.
🎬 The famous glowing ring from 'Interstellar' is exactly the light ring that gives away a black hole's secrets.