Jaime Rudas's latest activity
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Jaime Rudas replied to the thread High School Infinite universe, infinite volume from the beginning?.Yes, it's possible that it's flat, but we cannot determine that with certainty. -
Jaime Rudas reacted to Ibix's post in the thread High School Infinite universe, infinite volume from the beginning? with
Like.
I think the fact that it seems so close to flat that we can't tell the difference even when looking on scales of multiple billion light... -
Jaime Rudas reacted to Ibix's post in the thread High School Infinite universe, infinite volume from the beginning? with Like.
The point about the singularity is that it's where the model no longer works. The singularity doesn't have a volume because it isn't...
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Jaime Rudas reacted to PeroK's post in the thread High School Infinite universe, infinite volume from the beginning? with Like.
A singularity is where the mathematics breaks down. It is not a physical state. And it is not part of the mathematical model, as such...
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Jaime Rudas replied to the thread High School Infinite universe, infinite volume from the beginning?.No, that's not the case. According to the Big Bang theory, if the universe is infinite, it has always been so.
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Jaime Rudas replied to the thread High School Infinite universe, infinite volume from the beginning?.Yes, when the uncertainty margins give us only positive or only negative values, we could be reasonably sure that the curvature is...
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Jaime Rudas reacted to PeroK's post in the thread High School Infinite universe, infinite volume from the beginning? with Like.
You would also have to justify infinite homogeneity and isotropy.
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Jaime Rudas reacted to Hornbein's post in the thread High School Infinite universe, infinite volume from the beginning? with Like.
The data weakly indicates a hyperbolic universe with a spherical universe also possible. Somehow a flat universe is more popular. It's...
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Jaime Rudas reacted to Hornbein's post in the thread High School Infinite universe, infinite volume from the beginning? with Like.
If the Universe is hyperbolic then it is infinite. Maybe someday data will confirm this is the case.
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Jaime Rudas replied to the thread High School Infinite universe, infinite volume from the beginning?.Yes, that's what they currently point to because the best measurement of ##\Omega_{\kappa}## is ## 0.0007 \pm 0.0019##, but in the...
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Jaime Rudas replied to the thread Undergrad Age of the Universe and the Cosmological Constant.I just noticed an error in my list of equations and remembered using it here, so I'm correcting it: $$T = \frac 1 {H_0} \int_0^1 {\frac...
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Jaime Rudas reacted to javisot's post in the thread High School Infinite universe, infinite volume from the beginning? with Like.
The two points mentioned by Jaime and Ibix are very important. The expansion of the universe is a property of spacetime itself (it's not...
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Jaime Rudas reacted to Ibix's post in the thread High School Infinite universe, infinite volume from the beginning? with Like.
Not misleading, just wrong. You are correct that if the universe is closed and finite then it always was; if it is flat or open and...
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Jaime Rudas replied to the thread High School Infinite universe, infinite volume from the beginning?.Complementing what @Ibix mentioned, it might be worth mentioning that the expansion of the universe does not necessarily imply an...
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Jaime Rudas replied to the thread Undergrad A paper regarding the Hubble tension using Gaia data.Yes, the paper concludes that the age of the universe is: ##T_U \geq 13.8 \pm 1.0## (stat) ##\pm 1.4## (syst) Gyr According to the...