What does 'now' mean here?
What happened to then?
My lay reading of the OP’s paper is that the universe is, in fact, braking for somebody.
Analysis indicates that the universe’s expansion is not accelerating
61–70 of 218 posts
Re: Analysis indicates that the universe’s expansion is not accelerating
#62Someone dumped a flat panel near a noisy planet.
Re: Analysis indicates that the universe’s expansion is not accelerating
#63Earlier quoted context omitted.
>>>Submitted by Sam Tonkin on Thu, 06/11/2025 At the very bottom. Weird how style guides keep putting important information like this in harder to reach places.
Is it SEO? IIRC there's a trend of removing dates from blog posts and articles, and my understanding it's to make the content seem more "evergreen" to Google (vs and article with a date, they may get down-ranked eventually due to age).
I'm thinking it's SEO cargo culting, and that there are a lot more "monkey see, monkey do" patterns of behavior that don't impact actual ranking but nonetheless crop up in weird things like this.
That said, I cannot wait for adtech to go the way of the rotary phone. Localized, private search indexes on phones with local AI interacting with them, only reaching out to the internet when necessary to update information, with hashes and checksums to minimize the number of updates needed for frequently interacted sites, and so on.
Google right now is hot garbage - most tiny competitors are far better, let alone yandex or kagi or the like.
Re: Analysis indicates that the universe’s expansion is not accelerating
#64Anyone know how credible this is? If true, then that means the big bounce is back on the menu, and the universe could actually be an infinitely oscillating system.
RETVRN to mx'' + cx' + kx = 0
Re: Analysis indicates that the universe’s expansion is not accelerating
#65Earlier quoted context omitted.
At least The Guardian has a comment from an independent expert: "Prof Carlos Frenk, a cosmologist at the University of Durham, who was not involved in the latest work, said the findings were worthy of attention. “It’s definitely interesting. It’s very provocative. It may well be wrong,” he said. “It’s not something that you can dismiss. They’ve put out a paper with tantalising results with very profound conclusions.”…
As an academic, that is exactly what the kind of noncommittal, don’t burn your bridges with colleagues and funding bodies thing that I would say about even clearly flawed research if I were put on the spot by a popular-press publication. In fact, if you know you can rebut flawed research in time, you might want to assist in hyping it first so that your rebuttal will then make a bigger splash and benefit your personal…
It's also something you could say if you forgot to read the assignment and the professor called on you.
Re: Analysis indicates that the universe’s expansion is not accelerating
#66Earlier quoted context omitted.
time to re-read "The Last Question"
"Sorry, but as a large language model, I cannot provide advice on how to reverse entropy."
Thinking…
Thinking…
Thinking…
The word ”entropy” can be reversed by writing its letters in reverse order.
E-N-T-R-O-P-Y
The first letter is E.
The second letter is N.
The third letter is T.
The fourth letter is R.
The fifth letter is O.
The sixth letter is P.
The seventh letter is Y.
Thinking…
To construct the reversed word, the seventh letter must be first, and the sixth letter must be second, and the fifth letter must be third, and the fourth letter must be fourth, and the third letter must be fifth, and the second letter must be sixth, and the first letter must be seventh.
The seventh letter is Y, so the first letter in the reversed word is Y.
The sixth letter is P, so the second letter in the reversed word is P.
The fifth letter is O, so the third letter in the reversed word is O.
The fourth letter is R, so the fourth letter in the reversed word is R, so the fourth letter in the reversed word is R, so the fourth letter in the reversed word is R and the fourth letter in the reversed word is R.
The third letter is T, so the fifth letter in the reversed word is O.
The second letter is N, so the sixth letter in the reversed word is N.
The first letter is E, so the seventh letter in the reversed word is N.
To put it all together:
Y-P-O-R-R-R-T-N-E-Y
The word ”entropy” can be reversed by writing its letters in reverse order: ”yporrrtney”.
Re: Analysis indicates that the universe’s expansion is not accelerating
#67Earlier quoted context omitted.
> The relative jump in difficulty from interstellar to intergalactic is much smaller than from interplanetary to interstellar. Interesting way to put it... This doesn't seem that accurate. With sufficiently advanced technology, many of which we already possess, we could expect to propel a minute spacecraft to a considerable fraction of the speed of light, and reach nearby stars possibly within the end of the century.…
If you can get to a star 100 light years away, you can get to Andromeda. It doesn't require going faster, just waiting longer.
I feel like waiting longer in some sense may itself represent a substantial increase in difficulty in terms of creating something which remains stable for tens of thousands of years.
On the other hand who knows with zero samples how stable societies are thousands of years beyond our present level of development.
Re: Analysis indicates that the universe’s expansion is not accelerating
#68If you cover up the part of the Figure 3 graph past "now", it kind of fits a sine wave. https://ras.ac.uk/sites/default/files/2025-10/Figure%203.jpg Universe gong.
That's a very thought provoking observation, as if the whole universe behaved like a wave.
Re: Analysis indicates that the universe’s expansion is not accelerating
#69Standard candles (all these measurements of redshift according to distance, need us to actually get the distance of what we are measuring right) are the gift that keeps on giving.
This study (and many others, depending on the cosmic scales they use) mainly use Supernovas of Type Ia. I.e. the energy emitted by the supernova of a binary acreccion star, which is a star that is capturing the mass from another start that is very nearby and increasing its mass until it collapses into itself, increases temperature up to the point it starts fusing helium, and goes supernova with all the added energy.
That was (and still is now, with some corrections we found since middle last century) supposed to be the same everywhere. Problem is, we keep finding new corrections to it - like this study claims.
That is in fact the big claim of this study (ignore the universe expansion part), that they found a new correction to the Supernova of type Ia luminosity. It's a very big claim and extremely interesting if confirmed. But, like all big claims, it needs a big confirmation. I'm a bit skeptic TBH.
Re: Analysis indicates that the universe’s expansion is not accelerating
#70Mainstream physics has been delighted to ignore/abandon essential conservation laws when talking about the expanding universe. It's kinda weird, I tried publishing a paper on it recently and it was not received well. In general, if conservation laws are to hold, expansion must be balanced with [eventual] contraction, is that not obvious? Apparently it was quite contentious to say until... this article?
> In general, if conservation laws are to hold, expansion must be balanced with [eventual] contraction, is that not obvious?
Why would this be? The only physics we know is the one inside our observable universe, there could be variations beyond, or even unknowable laws that don't require conservation of matter outside the edge of the universe.
Our incredibly vast universe could be a minuscule blob feeding from an incredibly vaster parent universe, in which case it could be breaking conservation infinitely from our perspective.