this post was submitted on 17 Oct 2025
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On these scales, the accuracy of our observations should reduce our confidence though. It doesn't make sense to confidently say that, in 200 trillion years there will be no stars, because our observations of the rate of new matter creation (approximately zero) have a margin of error which allows for there to still be some
Until evidence shows otherwise, new matter being created doesnt fit our observations.
Go prove that wrong! Win yourself a Nobel prize in physics! That's what science is about!
I do also want to point out that stuff like "The conservation of energy" law, in other words, that energy cannot be created or destroyed, does not hold for our universe with our current models. An expanding universe violates the time-translation symmetry
This is our current models. This is what our current physics says. And we know it's incomplete.
When it comes to scientific predictions, you always, always, need the caveat, "under our current model of".
Space itself expanding doesnt, however...
New matter being created with extremely low probability fits perfectly with our observations.
A teapot created with out solar system orbiting the sun fits our models, with an extremely low probability.
However, we dont work on that assumption being true.