Woah—radical statement!


Quote:

Huge if true – dark energy doesn’t exist, claims new study on supernovas

Paper article is based on: https://doi.org/10.1093/mnrasl/slae112


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By looking at light from distant exploding stars called supernovas, in 1998 astronomers discovered the universe isn’t just expanding – its expansion is speeding up. But what’s behind this acceleration? Enter dark energy. It’s one of the most debated and intriguing missing puzzle pieces of modern physics – a mysterious form of energy believed to uniformly permeate all of space. In the current most accepted model of modern cosmology, dark energy is what drives the accelerated expansion of the universe. But what if there’s another explanation that doesn’t involve dark energy? A recent study using data from supernovas hints there might indeed be one, and it’s called the Timescape model.

Dark energy—an easy concept to explain somethings like the acceleration of the expansion of the universe. NASA offers an  explanation of it.


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What is the Timescape model? Matter – dark matter, gas, galaxies, star clusters and super clusters – is not uniformly spread throughout cosmos. But for the Lambda-CDM model, we assume the universe is homogeneous and isotropic. This means that, on cosmic scales, the distribution of matter appears smooth and uniform. Any clumps and gaps we might find can be considered insignificant due to the grand scale of the entire thing. By contrast, the Timescape model takes the uneven distribution of matter into account. It suggests our intricate cosmic web – made up of galaxies, clusters, filaments and vast cosmic voids – directly affects how we interpret the expansion of the universe. This would mean the universe isn’t stretching out evenly. According to the Timescape model, the universe’s expansion rate varies across different regions, depending on how dense they are. The key parameter in the Timescape model is the “void fraction”: it quantifies the proportion of space occupied by expanding voids. Gravity dictates that voids expand faster than denser regions – they have less matter to hold them back, allowing space to stretch more freely. This creates an average effect that can mimic the accelerated expansion attributed to dark energy in Lambda-CDM. In short, the Timescape model suggests it might only appear to us that the universe’s expansion is speeding up. The expansion speed depends on where you are in the universe.

That sounds logical but the vast distances and masses etc—who knows?


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What did the study find? The authors of the new study looked at one of the biggest collections of Type Ia supernovas, called the Pantheon+ dataset. These supernovas are a reliable standard used to test cosmological models. The team compared two major models: the standard Lambda-CDM (our “vanilla” recipe of the universe), and the Timescape model. When looking at nearby bright supernovas, the Timescape model explained things better than our standard model. This was only statistical though, with the statistical analysis showing a “very strong” preference. Even when they examined more distant supernovas, where things should be more evenly spread out, Timescape still held up slightly better than the usual model. The takeaway? The Timescape model, which focuses on how cosmic “clumps and gaps” change the way we see the universe growing, might be better at capturing the true nature of our universe’s expansion. This would be especially so for the nearby universe – we have a lot of voids and filaments near us, which would affect how we see the expansion.

So the model shows some promise.


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[caveats These potential sources of error could badly affect their results. Additionally, the study didn’t use the latest DES5yr dataset of supernovas. It’s more consistent and uniform in its data collection than Pantheon+, potentially making it more reliable for comparison. There are other things besides supernovas currently propping up the Lambda-CDM model, most notably baryon acoustic oscillations and gravitational lensing. Future work would need to integrate those into the Timescape model.

https://theconversation.com/huge-if-true-dark-energy-doesnt-exist-claims-new-study-on-supernovas-246674

https://www.nobelprize.org/prizes/physics/2011/popular-information/


The Nobel Prize in Physics 2011

Saul Perlmutter headed one of the two research teams, the Supernova Cosmology Project, initiated a decade earlier in 1988. Brian Schmidt headed another team of scientists, which towards the end of 1994 launched a competing project, the High-z Supernova Search Team, in which Adam Riess was to play a crucial role.


The two research teams raced each other to map the Universe by finding the most distant supernovae, star explosions in space. By establishing the distance to the supernovae and the speed at which they are moving away from us, scientists hoped to reveal our cosmic fate. They expected to find signs that the expansion of the Universe was slowing down, which would lead to equilibrium between fire and ice.
What they found was the opposite – the expansion was accelerating.

But maybe that is not real.

Jovial Monk wrote on Jan 11^th, 2025 at 12:29pm:

But maybe that is not real.

dear Monk,
many blessings.
It's not often that a Nobel Prize winner is declared later to be wrong.

Can you think of any example?

That isn’t how science works.

Dark energy is real. Just ask the Sith Lords.

Interesting.

https://theconversation.com/huge-if-true-dark-energy-doesnt-exist-claims-new-study-on-supernovas-246674


How strong is the evidence, then?
There are important caveats. The analysis doesn’t account for peculiar velocities – small, random motions of galaxies that can affect supernova measurements. They also don’t account for Malmquist bias, when brighter supernovas are more likely to be included in the data simply because they’re easier to detect.

These potential sources of error could badly affect their results.
Additionally, the study didn’t use the latest DES5yr dataset of supernovas. It’s more consistent and uniform in its data collection than Pantheon+, potentially making it more reliable for comparison.

There are other things besides supernovas currently propping up the Lambda-CDM model, most notably baryon acoustic oscillations and gravitational lensing. Future work would need to integrate those into the Timescape model.

But with this new study, the Timescape model offers an intriguing alternative to Lambda-CDM. The bottom line is that our universe’s acceleration is an illusion due to the uneven distribution of matter with large cosmic voids expanding faster than denser regions.

If confirmed, this would represent a revolutionary paradigm shift in cosmology.

Dark energy/matter is what is called for all that is undiscovered/unexplained in relation to the missing bits that still have influence on all that is discovered, but still not fully explained.

To say that dark energy/matter doesn't exist.
Is to say that everything is 100% known and explainable.

I think it more like another crap paper pushed out for money.
The amount of science papers being pumped out are looking more like science fiction and science fantasy, as a premature aim for $$$ rather than proving any facts.
Science is starting to reach for stuff that pagans used to do.

Jasin wrote on Jan 14^th, 2025 at 4:05pm:

Dark energy/matter is what is called for all that is undiscovered/unexplained in relation to the missing bits that still have influence on all that is discovered, but still not fully explained. To say that dark energy/matter doesn't exist. Is to say that everything is 100% known and explainable. I think it more like another crap paper pushed out for money. The amount of science papers being pumped out are looking more like science fiction and science fantasy, as a premature aim for $$$ rather than proving any facts. Science is starting to reach for stuff that pagans used to do.

We are trying to know things that are unknowable.

People ask questions like -
what was there before the Big Bang? -
we'll never know that.

It's like the massive Voids in the Universe. They expand and they 'push' matter in conjunction to gravitational pulling of galaxy clusters like the Great Attractor.
They don't know what makes the Voids 'push'. They can only refer to it as Dark energy, for want of dark matter, if there is any?

"Dark energy doesn’t exist"



Whoa !!!!!!!!


You mean, you mean,
that the theory of 'DARK ENERGY' was just 'made up' !!

And that 'DARK ENERGY' was just A SCIENTIFIC SUPPOSITION,
which enabled scientists to explain something, which they [really, really, really] did not understand,
about the reality which we find ourselves experiencing ???



Next, you'll be trying to tell me that there really, really,
WAS,
NO 'BIG BANG' too !!!


Oh look,       ...there is a pig,       ......flying past my window !!!!

/sarc off


.


Romans 1:19
Because that which may be known of God is manifest in them; for God hath shewed it unto them.
20  For the invisible things of him from the creation of the world are clearly seen, being understood by the things that are made, even his eternal power and Godhead; so that they are without excuse:
21  Because that, when they knew God, they glorified him not as God, neither were thankful; but became vain in their imaginations, and their foolish heart was darkened.
     22  Professing themselves to be wise, they became fools,
23  And changed the glory of the uncorruptible God into an image made like to corruptible man, and to birds, and fourfooted beasts, and creeping things.

Dear Yadda,
some things - only God will ever know.

The use of the word 'dark' is much the same as 'the great unknown'.
Just like the original wording for Black Holes was the more correct 'Dark' Star.

As for God? Well God and the Devil are the same.
God has lied often.
Life didn't begin in the Light.
It began in the deep depths of the oceans via Chemosytbesis long before it rose and long before it moved onto land.

Judaism, Christianity & Mohommedism are religions of human nature.
Zoroastrianism is the Religion of Element (Fire)... it's a Science.

Bobby. wrote on Jan 14^th, 2025 at 5:32pm:

Dear Yadda, some things - only God will ever know.

Hi bobby,

This life.

What is it ?

Just a journey,     .....where, every day,
we make choices,
and where, every day,
we put one foot, in front of the other.

Until, we do not do this, any more.


.


Ecclesiastes 8:14
There is a vanity which is done upon the earth; that there be just men, unto whom it happeneth according to the work of the wicked; again, there be wicked men, to whom it happeneth according to the work of the righteous: I said that this also is vanity.
15  Then I commended mirth, because a man hath no better thing under the sun, than to eat, and to drink, and to be merry: for that shall abide with him of his labour the days of his life, which God giveth him under the sun.
16  When I applied mine heart to know wisdom, and to see the business that is done upon the earth: (for also there is that neither day nor night seeth sleep with his eyes:)
17  Then I beheld all the work of God, that a man cannot find out the work that is done under the sun: because though a man labour to seek it out, yet he shall not find it; yea further; though a wise man think to know it, yet shall he not be able to find it.

Life is more than a 'humanised' religion.
It will still exist after humans are gone.
God/Devil are a human construct.

Zoroastrianism is founded on Life.

Jasin wrote on Jan 14^th, 2025 at 6:13pm:

The use of the word 'dark' is much the same as 'the great unknown'. Just like the original wording for Black Holes was the more correct 'Dark' Star. As for God? Well God and the Devil are the same. God has lied often. Life didn't begin in the Light. It began in the deep depths of the oceans via Chemosytbesis long before it rose and long before it moved onto land. Judaism, Christianity & Mohommedism are religions of human nature. Zoroastrianism is the Religion of Element (Fire)... it's a Science.

No - it's dark because we can't see it.

Same as dark matter -
we can't see it but we know it's there from its gravitational influence.

It's dark because we can't perceive it in any manner, beyond knowing that what we can perceive of the universe is influenced by that unknown.

Maybe it's your God?
Well isn't he a dark one then  ;)

Jasin wrote on Jan 14^th, 2025 at 6:40pm:

It's dark because we can't perceive it in any manner, beyond knowing that what we can perceive of the universe is influenced by that unknown. Maybe it's your God? Well isn't he a dark one then  ;)

It's like the Dragon's breath - it's all around us -

https://www.youtube.com/watch?v=NwcNNbxUE-w

Yes.

Jasin wrote on Jan 14^th, 2025 at 7:03pm:

Yes.

But alas - Merlin is in the land of dreams now:


https://www.youtube.com/watch?v=31fO1E26Oic

That is the manifestation of Merlin (pagan) being superseded by Christianity.

The original King Arthur story was a Pagan Briton one.

Long after, it was 'stolen' by Christianity and 'converted'.

Jasin wrote on Jan 14^th, 2025 at 7:21pm:

That is the manifestation of Merlin (pagan) being superseded by Christianity. The original King Arthur story was a Pagan Briton one. Long after, it was 'stolen' by Christianity and 'converted'.

And they went to the Holy lands of Israel in search of the Holy Grail.

The people that formed the myth of King Arthur and Camelot etc did not go to the holy land—they were too busy fighting vikings.

Jasin wrote on Jan 14^th, 2025 at 6:23pm:

Life is more than a 'humanised' religion. It will still exist after humans are gone. God/Devil are a human construct. Zoroastrianism is founded on Life.

jasin,

There is 'a lot' [in 'our experience'] that we have no real understanding of.

It is difficult to have an understanding......of something which we cannot see [with our eyes] and cannot perceive because of the deficiency in our intellectual capacity.

Matter.

Energy.



There is a 'veil', separating us, from what we refer to as 'reality'.

I do not understand 'what' God is.      .......i do not even understand what my/our circumstances are.

But i know that my desire, is to be known [and to be redeemed], by Him.    By God.

YMMV


.


Matthew 27:51
And, behold, the veil of the temple was rent in twain from the top to the bottom; and the earth did quake, and the rocks rent;

Jovial Monk wrote on Jan 14^th, 2025 at 8:15pm:

The people that formed the myth of King Arthur and Camelot etc did not go to the holy land—they were too busy fighting vikings.

You idiot troll.

The legend of Arthur originated from the Britons down near the tin mines of Cornwall. It was a propaganda story for Britons against the hordes of Anglos, Saxons &Jutes that were immigrating in. There is no archeological evidence from 6000 graves of death by violence. It wasn't an invasion. There were no knights or Medieval aspects to the original story because it was way before such Christianised times.
It was a passive story that has been corrupted by Christianity.

No, it dates to about 500AD when Vikings invaded England. A chieftain created an alliance with other tribes and for a long time stopped the Vikings pressing further into western England. The chieftain was not called Arthur  :)

Yes, later that chieftain was made the basis of the Arthur myth. I have covered this somewhere on OzPol.

Your trivial pursuit cards and bottle top lids don't count Troll.

I'll stick with my archeological friends in England thanks

Yadda wrote on Jan 14^th, 2025 at 9:42pm:

Jasin wrote on Jan 14th, 2025 at 6:23pm: Life is more than a 'humanised' religion. It will still exist after humans are gone. God/Devil are a human construct. Zoroastrianism is founded on Life. jasin, There is 'a lot' [in 'our experience'] that we have no real understanding of. It is difficult to have an understanding......of something which we cannot see [with our eyes] and cannot perceive because of the deficiency in our intellectual capacity. Matter. Energy. There is a 'veil', separating us, from what we refer to as 'reality'. I do not understand 'what' God is.      .......i do not even understand what my/our circumstances are. But i know that my desire, is to be known [and to be redeemed], by Him.    By God. YMMV . Matthew 27:51 And, behold, the veil of the temple was rent in twain from the top to the bottom; and the earth did quake, and the rocks rent;

Gravity

Yep.

God has never had a clue about the Universe.
He should stick to books in a library (Temple)

This Topic was moved here from Fringe by freediver.

The Coma Cluster contains over a thousand galaxies and has become one of the key pieces of evidence for the existence of dark matter.

The galaxies within it are moving too fast to be held together by visible matter alone.
Furthermore, this cluster
distorts the light of more distant objects—an effect known as gravitational lensing.

This image of the Coma Cluster was captured by the Dark Energy Camera and shows it as a densely populated cluster of entire galaxies.
https://c02.purpledshub.com/uploads/sites/48/2024/08/coma-cluster-social.jpg