this post was submitted on 13 Oct 2025
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Okay. I need a physicist. How does that relate to the heat death of the universe. Is all iron-56 the most probable distribution of energy in the universe (max entropy)?
Not a physicist, but I thought the heat death of the universe also involved all the matter being sucked into black holes and turned into pure energy. There's a big chunk converted up front in the accretion disk, then the rest is converted into hawking radiation as the black hole(s) evaporate over the oodles and oodles of years.
Whether or not there are also lumps of iron-56 or other matter floating around in the cold void probably depends on the real truth behind dark matter and dark energy and their long-term behavior.
Astronomer here, not necessarily. Generally, heat death just means entropy goes maximal, as in everything is as spread out as it can be and the heat everywhere in the universe is the same.
Not sure if on those time scales all gets sucked up by BH