this post was submitted on 17 Mar 2024
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[–] xionzui 7 points 8 months ago (1 children)

Light does actually just lose energy to nowhere in our current understanding of expanding space.

[–] [email protected] 1 points 8 months ago (1 children)

How does this reconcile with the first law of thermodynamics? Or does it just not?

[–] xionzui 2 points 8 months ago

I’m no expert, and I don’t think we know for sure, but it sounds like it might be related to the increase in vacuum energy from the added space. It’s also possible the total amount of net energy in the universe is 0 and conserved