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Home NASA

Matter-spewing ‘singularities’ may eradicate the necessity for darkish vitality and darkish matter

April 15, 2025
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Matter-spewing ‘singularities’ may eradicate the necessity for darkish vitality and darkish matter
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A brand new mannequin of the cosmos does away with the universe’s two most troubling and mysterious parts, darkish vitality and darkish matter, collectively known as the darkish universe. Here is the thought.

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The brand new idea replaces the darkish universe with a large number of step-like bursts known as “transient temporal singularities” that erupt all through the whole cosmos.

It is attainable, scientists say, that these transient temporal singularities may open to flood the universe with matter and vitality, inflicting the very material of area to develop. These rifts would shut so rapidly they might stay undetectable, leaving us to see the enlargement of the cosmos we credit score to darkish vitality, and the gravitational affect we attribute to darkish matter.

“The brand new mannequin can account for each construction formation and stability, and the important thing observational properties of the enlargement of the universe at massive, by enlisting density singularities in time that uniformly have an effect on all area to interchange standard darkish matter and darkish vitality,” analysis creator Richard Lieu, a physics professor at The College of Alabama in Huntsville, said in a statement.


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The darkish universe below stress

The darkish universe is poses such an enormous conundrum for scientists as a result of it means that solely 5% of the matter and vitality within the cosmos includes what we see round us on a day-to-day foundation in stars, planets, moons, our our bodies — and every thing else, actually.

In different phrases, we do not know what the opposite 95% of the cosmos is.

Of this huge slice of the universe’s matter and vitality price range, darkish vitality — the placeholder identify for the pressure inflicting the enlargement of the universe to speed up — accounts for round 70%.

Darkish matter, however, helped the primary galaxies collect by means of its gravitational affect — nevertheless it stays successfully invisible as a result of it does not work together with gentle. But, darkish matter accounts for the remaining round 25% of that matter price range.

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The ubiquity of darkish matter and darkish vitality and their significance in our fashions of cosmic evolution make the darkish universe a double thriller that scientists would like to resolve.

A black circle divided into three sections against a white background

A diagram exhibiting estimated contributions to the universe’s energy-matter price range demonstrating the dominance of darkish vitality (Picture credit score: ESA)

Constructing upon prior analysis during which he instructed that gravity may exist with out the presence of mass, Lieu does away with the necessity for darkish matter and darkish vitality.

In contrast to earlier makes an attempt, nevertheless, Lieu’s mannequin does not want an unique addition to present cosmological fashions, comparable to “damaging mass” or “damaging density,” to negate the darkish universe.

“Sir Fred Hoyle opposed Large Bang cosmology and postulated a ‘regular state’ mannequin of the universe during which matter and vitality have been continuously being created because the universe expands,” Lieu defined. “However that speculation violates the legislation of mass-energy conservation.”

Lieu as an alternative means that by way of transient temporal singularities, matter and vitality can seem and disappear in sudden bursts. This does not violate the present conservation legal guidelines of physics.

“These singularities are unobservable as a result of they happen hardly ever in time and are unresolvedly quick, and that might be the explanation why darkish matter and darkish vitality haven’t been discovered,” Lieu added. “The origin of those temporal singularities is unknown – protected to say that the identical is true of the second of the Large Bang itself.”

A funnel-shaped white grid against a black background.

A timeline of the universe for the reason that Large Bang round 13.7 billion years in the past. (Picture credit score: NASA/WMAP Science Group)

Lieu’s mannequin sees these singularities as producing a “damaging stress” with an anti-gravity-like impact serving to push the universe aside at an accelerating price, simply as darkish vitality is proposed to do.

“An instance is the damaging stress exerted by a magnetic discipline alongside a discipline line,” Lieu stated. “Einstein additionally postulated damaging stress in his 1917 paper on the Cosmological Fixed. When optimistic mass-energy density is mixed with damaging stress, there are some restrictions which make sure the mass-energy density stays optimistic with respect to any uniformly transferring observer, so the damaging density assumption is prevented within the new mannequin.”

Lieu’s final conclusion is that the darkish universe and its constituents will not be an omnipresent issue within the cosmos.

“They solely seem briefly cases throughout which the matter and vitality do fill the whole universe uniformly, aside from random spatial density variations which develop to type certain buildings like galaxies,” he continued. “In between which, they don’t seem to be to be discovered anyplace.

“The one distinction between this work and the usual mannequin is that the temporal singularity occurred solely as soon as within the latter, however greater than as soon as within the former.”

Sooner or later, Lieu intends to attempt validating his concept by turning to ground-based telescopes to search for “jumps” in redshift — in reference to the stretching of sunshine coming from distant objects as they recede away from us because of the enlargement of area.

“The easiest way to search for the proposed impact is definitely to make use of a big ground-based telescope – just like the Keck Observatory [located in Hawaii], or the Isaac Newton Group of Telescopes in La Palma, Spain – to carry out deep discipline observations, the info of which might be ‘sliced’ in accordance with redshift,” he stated. “Given ample redshift (or, equivalently, time) decision effected by the redshift slicing, one would possibly simply discover that the Hubble diagram reveals jumps within the redshift distance relation, which might be very revealing.”

Lieu’s analysis was revealed on March 21 within the journal Classical and Quantum Gravity.



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