This model has been in testing for 3 years and it passed all tests so far.
It already past sevral test and it solves a lot of problems that require dark energy or matter. And problems introduced by the James Webb telescope. It also confirmed cosmic chronometer findings on the expansion history.
It does not disprove models, it just shows that dark matter and energy are not needed and explains why we can’t find them.
This kind of fringe research keeps showing up. It’s very popular among non-scientists and apparently easily dismissed by those who know what they’re talking about. I’m by no means an expert, I’m just here to drop a link to a relevant video: https://youtu.be/PbmJkMhmrVI
How does this explain why some galaxies have more gravitational influence than can be seen while other galaxies exactly what we expect from observing the visible matter.
This is one of those studies that solves one problem and ignores the other 17.
The general consensus I can find on what defines a galaxy is "Most astronomers agree on these basics: galaxies are massive, gravitationally bound systems of stars, gas and dust, with an important but poorly understood complement of dark matter. " and it’s not agreed because even with the measurements we have some that lack dark matter. So it is a good and open question even current theory lacks
I thought dark matter was pretty much confirmed because of the universe’s expansion acceleration though ?
Dark energy “explains” why the universe expands more than we expect, and dark matter “explains” why some parts of the universe stick together more than we expect. Eventually we’ll get a better understanding of how gravity/space/time works and won’t need these bolt-ons anymore
There has been some good evidence lately that the universe is not expanding and that originally this theory was built on some faulty information.
This could mean no dark matter and perhaps no big bang.
No more red shift?
I am no astronomer so please take this with a grain of salt. It is my understanding that we made what could be some incorrect assumptions based on our position observing the universe. This is not definitive yet, but it looks like our current accepted views, like the universe expanding everywhere at equal speeds, may be wrong.
So a moment akin to realizing the sun does not revolve around the earth?
Yeah, it is hard to judge things from only our one perspective so we can fall into traps.
But I could swear I saw a report where a guy detected dark matter a long time ago.
There were probably a bunch of caveats attached to it I didn’t pick up on.
If they can detect it, then it’s not dark matter.
Well I think it was indirect, like gravitational lensing.
Sure, probably true. We’ve detected a lot of dark matter actually! Based on a bunch of things, we expect the universe to have more matter than we actually observe. Dark matter just refers to any mass that falls into that category of “previously unobserved”. So as we discover that there are more black holes than we thought, as our telescopes become capable of detecting extremely dim brown dwarves, and as we discover new subatomic particles, we chip away at dark matter, finally shining a light over previously hidden areas of our universe.
But there’s still more unaccounted for.
Very cool! I’m no expert in cosmology but I was familiar with some if the evidence for dark matter, namely rotation curves, and its really cool to hear about plausible alternate theories.
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