Our universe · Asymptotic state
Heat death of the universe
An asymptotic state of maximum entropy with no available gradients to do work.
What this means
This is neither a single moment nor an event with a date. That is why Aftertime deliberately does not display a misleading timer for it.
PRIMARY SOURCE
A Dying Universe: The Long-Term Fate and Evolution of Astrophysical ObjectsReviews of Modern Physics ↗