What happens when the universe runs out of light?Not tomorrow. Not in a billion years. But eventually — according to modern cosmology and the laws of thermodynamics — every star will die. The galaxies will go dark. Black holes will evaporate. Even matter itself may decay into radiation, leaving behind an empty universe drifting toward eternal silence.In this deep, atmospheric journey through the far future of the cosmos, we explore the complete timeline of the universe — fr...