Cosmologists: “We are STILL right! Dark energy does exist!”

Behind the Black ^ | 11 Jun, 2026 | Robert Zimmerman

[MtnClimber]

The uncertainty of science: In two somewhat self-righteous press releases today from two different academic organizations, scientists who have been for three decades touting the somewhat uncertain evidence that the expansion of the universe is accelerating, thus requiring the ad hoc creation of something they label “dark energy” to explain it, insisted that their theory is still right despite publication of a paper last year that said their evidence was weak and unconvincing.

The headlines of the first press release is especially insulting to the very concept of the scientific method:

- Royal Astronomical Society: ‘Crisis averted’ as experts confirm universe’s expansion IS accelerating

- University of Southhampton: Universe expansion still accelerating say astronomers

Both press releases have an arrogant attitude to those questioning the theory of dark energy, but the first is truly egregious. It is filled with bombastic claims, such as calling it “a crisis” for anyone to dare question the theory. It also uses a reliance on authority to justify its position (“The researchers … include two Nobel Laureates and represent institutions worldwide”). And finally, it demands that such questioning end, so “we can get back to trying to understand what this dark energy actually is, rather than wondering if it exists at all.”

The 2025 study that questioned the existence of dark energy — claiming the universe’s expansion rate was not accelerating — was actually part of a string of similar results. It did not occur in a vacuum, and actually stemmed from the overall uncertainty of the original supernova data.

Scientists in the 1990s had begun by assuming the brightness of a certain type of supernova is always the same, no matter when or where it happened. They then measured such supernovae in the early universe and found their brightness suggested the universe was expanding faster than predicted.

Since then, multiple studies have noted the weakness of that basic assumption. We don’t know enough about these supernovae, nor do we know enough about the environment in which they occur in the early universe.

The bottom line: The theory of dark energy might fit the facts as we have them now, but those facts remain uncertain and open to doubt. It is perfectly reasonable to question those facts, and to try to stifle that questioning violates the very fundamentals of the scientific method, which demands you question everything, that you search for truth wherever it may lead.

Sadly, this pattern of arrogance by cosmologists is not new. It has grated on my nerves since my first interview with a cosmologist in 1995, when she got insulted and huffy because I dared ask her some tough questions. This arrogance has gotten so bad that in 2022 24 scientists signed a petition protesting the censorship of their work for questioning the Big Bang theory.

Meanwhile, the data remains uncertain and actually contradictory. One set of data says the Hubble constant (the expansion rate) is one number, while another equally trustworthy data set says the constant is another number. And almost a decade of intense research has failed to resolve the conflict.

This new work might have proven the dark energy theory is still viable, but the press releases do little to convince anyone.

[ReganFan4ever]

E will be negative.

Negative energy. Is this even possible?

[muir_redwoods]

Never forget, often what you’re reading that a scientist said is what a reporter thinks he heard.

[libertylover]

“We don’t know what we don’t know”

An official in a Republican administration said this once and the press used it say, "See. See. This administration is completely incompetent". (Tagline is still accurate.)

[Reily]

University PR departments are notoriously for hyperbole when reporting University search accomplishments.

[Reily]

for hyperbole = for their hyperbole

[AdmSmith]

It is estimated that the total mass and energy of the universe are distributed as follows: Dark energy: ~68%, dark matter: ~27%, and ordinary (visible) matter: ~5%
https://science.nasa.gov/dark-matter/

There are several hypotheses regarding dark energy. Read more at https://en.wikipedia.org/wiki/Dark_energy

Neil Turok has an interesting hypothesis that the stable right-handed or sterile neutrino is dark matter.
https://www.youtube.com/watch?v=VlP-12yc2f8

https://en.wikipedia.org/wiki/Sterile_neutrino

[plain talk]

"There is so much that we just don’t know."

Now THAT is the right statement.

[linedrive]

My understanding is the Law of Thermodynamics ASSUMES an isolated (closed)system. Meaning: there is no subsequent application of energy into the system (our Universe) after the initial start (Big Bang).

The Holy Spirit can not be accepted as a rational explanation; hence, dark matter/energy.

[bennowens]

The dark matter is between their ears! The reason for the ever expanding universe is a defect in the speed of light. It slows up over distances and therefore creates the illusion of more rapidly expansion. This is a lot more reasonable explanation than “dark energy” clouds outside of our observable universe. Come on! Einstein theorized that light can be bent by gravity and that was subsequently proven. I hold that if gravity can bend it then gravity can slow it.

[BereanBrain]

https://www.ucdavis.edu/blog/taking-dark-energy-out-equation

String theory, Dark Energy, Dark Matter, all are like “spontaneous generation”.

Looking at science history, a lot of things fall into this category.

The cause and effect universe is DEAD. (at the underlying level).

[SuperLuminal]

Forget DEI...
Up with DEM! It matters...

[powerset]

“I hold that if gravity can bend it then gravity can slow it.”

My understanding is that photons never slow down, they just lose energy going “uphill” in a gravitational field. Losing energy means the wavelength gets longer: e.g. visible light shifts towards red, X-rays shift towards UV, etc.

(And of course the opposite when going “downhill”.)

[tired&retired]

Is reverse polarity negative energy?

This is what happens in the neuron during the action potential firing cycle.

[tired&retired]

A theoretical model in physics suggests that the positive energy of all matter in the universe perfectly cancels out with the negative energy of its gravitational fields, resulting in a total net energy of exactly zero.

[ReganFan4ever]

Thanks for the explanation.

And blessings to you too.

[central_va]

What do cosmetologists know?

[thepoodlebites]

Here’s a segment from my personal notes:

By introducing a spherical shell of unknown matter around galaxies that interacted gravitationally, computer simulations predicted precisely the interaction of two or more galaxies, including those included in the 1966 Arp catalog of Peculiar Galaxies. A groundbreaking 1998 study of type 1a supernovae found that the expansion of the universe is accelerating. There has to be a fifth force acting against the force of gravity on cosmic scales, antigravity, vacuum energy, aka, dark energy.

We understand the large scale structure of the universe as a complex network of galaxy superclusters (see SDSS) tied together on an invisible framework of filaments, possibly formed when dark matter dominated the early universe. Dark matter may have been the scaffolding upon which galaxies subsequently coalesced. Large voids in between this cosmic web may be dark energy’s domain, a force acting against the force of gravity. The 1998 type 1a supernovae study was confirmed in 2011 with measurements of Baryonic Acoustic Oscillation (BAO)s.

[thepoodlebites]

Isn’t all ant-matter actually directly related to dark Matter?
—
Antimatter can be observed and has an attractive gravitational force wrt normal matter. Dark matter has never been directly observed but has an indirect influence on stars orbiting their host galaxies.
Stars near the edge of the galactic disk have higher velocities than they should, almost like a record on a record player. A torus of dark matter at a distance away from the galactic disk is needed to accurately simulate star motion within a galaxy and galaxy interactions.

[tired&retired]

Thank You for sharing.

🙏🙏🙏

[thepoodlebites]

I was checking out the website EarthSky and found this article. It seems that there were flaws in 2025 study that concluded, the expansion of the universe was slowing down. [1]
Note: the crescent moon near Jupiter, Venus and Regulus, are putting on a nice show in the evening sky.

1. https://earthsky.org/space/no-crisis-universes-expansion-is-accelerating-study-says/