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