this post was submitted on 17 Mar 2024
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Light does actually just lose energy to nowhere in our current understanding of expanding space.
How does this reconcile with the first law of thermodynamics? Or does it just not?
Iβm no expert, and I donβt think we know for sure, but it sounds like it might be related to the increase in vacuum energy from the added space. Itβs also possible the total amount of net energy in the universe is 0 and conserved