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Q: After the heat death of the universe will anything ever happen again?
In particular, heat energy always flows from the hotter to the cooler until everything is at the same temperature (hence the name: “thermodynamics”). For example, the Sun has lots of heat energy in one (relativity small) place. However, when you look at really, really small systems you find that entropy will sometimes decrease. “Heat death” doesn’t necessarily mean that there’s no heat, just no concentrations of heat. Really, really unlikely.
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