General Relativity2026-05-041 minarXiv:2605.02429expressBlack Holes: Light's Hidden StatesBlack holes aren't faceless devourers. Sometimes they behave like water: they can 'freeze' or 'boil', changing their internal state. Scientists described this by modeling light near a black hole as a gas.Phuwadon Chunaksorn·Ratchaphat Nakarachinda·Pitayuth WongjunBekenstein-Hawking entropyFirst law of black hole mechanicsJacob BekensteinStephen HawkingJohn Archibald Wheelerblack holeHawking radiationentropyblack hole mergerPhase transition👍👎☆SimplePopularAdvanced