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Researchers: Assigning new properties to dark matter might remove the need for dark energy


Dark energy is estimated to be nearly 70% of the universe — provided it exists:

Until now, researchers have believed that dark energy accounted for nearly 70 percent of the ever-accelerating, expanding universe.

For many years, this mechanism has been associated with the so-called cosmological constant, developed by Einstein in 1917, that refers to an unknown repellent cosmic power.

But because the cosmological constant — known as dark energy — cannot be measured directly, numerous researchers, including Einstein, have doubted its existence — without being able to suggest a viable alternative.

Until now. In a new study by researchers at the University of Copenhagen, a model was tested that replaces dark energy with a dark matter in the form of magnetic forces.

“If what we discovered is accurate, it would upend our belief that what we thought made up 70 percent of the universe does not actually exist. We have removed dark energy from the equation and added in a few more properties for dark matter. This appears to have the same effect upon the universe’s expansion as dark energy,” explains Steen Harle Hansen, an associate professor at the Niels Bohr Institute’s DARK Cosmology Centre.

University of Copenhagen – Faculty of Science, “New study sows doubt about the composition of 70 percent of our universe” at ScienceDaily

Dark matter is thought to be about 25% of the universe but we haven’t found a single particle of it:

“We don’t know much about dark matter other than that it is a heavy and slow particle. But then we wondered — what if dark matter had some quality that was analogous to magnetism in it? We know that as normal particles move around, they create magnetism. And, magnets attract or repel other magnets — so what if that’s what’s going on in the universe? That this constant expansion of dark matter is occurring thanks to some sort of magnetic force?” asks Steen Hansen. …

As Hansen puts it:

“Honestly, our discovery may just be a coincidence. But if it isn’t, it is truly incredible. It would change our understanding of the universe’s composition and why it is expanding. As far as our current knowledge, our ideas about dark matter with a type of magnetic force and the idea about dark energy are equally wild. Only more detailed observations will determine which of these models is the more realistic. So, it will be incredibly exciting to retest our result.

University of Copenhagen – Faculty of Science, “New study sows doubt about the composition of 70 percent of our universe” at ScienceDaily

If the two competing ideas are “equally wild,” couldn’t they be equally wrong?

The paper is open access.

Sev @ 2, >The more ideas science generates, the more likely it is to hit on the right one. Unless they're barking up the wrong paradigm. Then they will not be getting closer. There are an infinite number of wrong ideas. EDTA
@Seversky O sancta simplicitas! Belfast
I've said this for several years now. Very simple. There is a scalar energy field that 'leaks' into spacetime. Mass is a side-product of restricting this 'leak.' At the time of the Big Bang, the energy content of the universe (expanding spacetime) was dominated by its initial energy. As space and time expanded, this energy dissipated. When mass began to accumulate, such as in stars and galaxies and clusters, etc., then 'free space' and space associated with clusters of stars began to operate differently. With time--huge amounts of time, the energy density of this scalar field builds up while, at the same time, mass accumulates more and more (black holes, supermassive black holes, neutron stars, etc). This means that with Dark Matter restrained somewhat by massive structures, 'free' space will begin to expand faster and faster once some critical tipping point is reached. Hence, the phenomena of an increasingly accelerated expansion of the universe. Dark energy and dark matter are the very same thing. Dark matter "forms" around massive structures, ie. inside galaxies. Dark Energy "forms" in between the galaxies and clusters: i.e., there is a higher energy density in 'free space' than space surrounded by matter. That's all anyone, including physicists, need to know. This article suggests they're closing in on this connection. Hope I live to see it--that is, hope it's soon. PaV
The more ideas science generates, the more likely it is to hit on the right one. This is a feature not a bug. Seversky
An idea that gets grants is right. An idea that doesn't get grants is wrong. polistra

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