this post was submitted on 17 Oct 2025
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I mean, have you considered that the expansion of the universe generates or increases the total energy in the universe?
As stars move apart, they gain both potential energy with respect to other stars, because greater distance from gravity sources means greater potential energy, but they also gain kinetic energy as they accelerate away from other objects. So, their mechanical energy (potential + kinetic energy) increases over time. Maybe somebody could build a clever machine out of this to harvest that energy?
IIRC, the current theory is that stars do not move apart, but that space itself expands, which generates the impression that they move apart.