Stelliferous Era A universe filled with billions of protostars Gravitational contraction Nuclear fusion Core-collapse supernovas Interstellar medium The degenerate remnant won't return to stellar gas Star formation Will terminate as matter runs out Increasing rate Of an ever expanding universe The Entropy Increased until its maximum value No space for energetic flow A cosmic disaster Unavoidable circumstances An infinite expansion All information gets lost In this fugacious universe Black Hole Era Evaporating slowly themselves Hawking radiation Only few particles will remain Billions of intelligent beings Are in mortal agony Trying to store a finite Amount of energy Dark Era Inconceivable low energy levels Metastable structures Formed by an insuperable vacuum The Entropy Increased until its maximum value No space for energetic flow A cosmic disaster A last rise against Of a vastly superior race The perpetual darkness Prevented for eternity