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Dark Matter: Is a Revolution Coming to Physics?
scitechdaily.com ^ | JULY 15, 2022

Posted on 07/17/2022 12:56:29 PM PDT by BenLurkin

Newton’s Theory of Gravity explains most large-scale events fairly well. ... However, the theory is not foolproof. Einstein’s theories of general and special relativity, for example, explained data that Newton’s theory couldn’t. Scientists still use Newton’s theory because it works in the overwhelming majority of cases and has much simpler equations.

Dark matter was proposed as a way to reconcile Newtonian physics with the data. But what if, instead of reconciliation, a modified theory is needed.... Mordehai Milgrom...developed a theory of gravity (called Modified Newtonian Dynamics or “Mond” for short) in 1982 that postulates gravity functions differently when it becomes very weak, such as at the edge of disk galaxies.

His theory does not simply explain the behaviors of galaxies; it predicts them. The problem with theories is that they can explain just about anything. ...One way to separate good theories from bad ones is to see which theory makes better predictions.

Recent analysis of Mond shows that it makes significantly better predictions than standard dark matter models. What that means is that, while dark matter can explain the behavior of galaxies quite well, it has little predictive power and is, at least on this front, an inferior theory.

Only more data and debate will be able to settle the score on dark matter and Mond. However, Mond coming to be accepted as the best explanation would shatter decades of scientific consensus and make one of the more mysterious features of the universe much more normal. A modified theory may not be as sexy as dark, unseen forces, but it may just have the advantage of being better science.

(Excerpt) Read more at scitechdaily.com ...


TOPICS: Astronomy; Science
KEYWORDS: astronomy; darkmatter; mond; mordehaimilgrom; mtheory; physics; quantumloopgravity; relativity; science; speedofdark; stringtheory
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To: TexasGator

Well... controlled flight into the ground but yeah... she’ll fly.


21 posted on 07/17/2022 2:02:22 PM PDT by Samurai_Jack (This is not about hypocrisy, this is about hierarchy!)
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To: Samurai_Jack
"Well... controlled flight into the ground but yeah... she’ll fly."


22 posted on 07/17/2022 2:04:34 PM PDT by TexasGator (UF)
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To: PIF

I chuckled at that, myself.


23 posted on 07/17/2022 2:06:35 PM PDT by tanstaafl.72555
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To: BereanBrain
Dark Matter is Dumb Science. here’s why. We have an equation on how the big bang “works”.

Leave aside the Big Bang for a minute, the problem is that Newton's laws of physics break down when we observe galaxies. There are two critical observations that currently have no explanation:

1. The gravitation pull of a galaxy is about six times the strength it should be.

2. The stars on the outer rim of a galaxy move at the same speed as stars closer to its massive black hole center. Newton says these outer stars should move much slower. For example, Pluto revolves around the sun much slower than Mercury - Newton is good here.

So far, there are two main theories to predict this phenomenon:

1. There is dark matter we haven't found yet that explains the gravitational irregularities of galaxies.

2. The laws of gravity change when we get to big structures like galaxies.

The point of this article is that the second theory is gaining popularity among physicists. So you may end up being right: dark matter is BS.

24 posted on 07/17/2022 2:06:41 PM PDT by Right_Wing_Madman
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To: Right_Wing_Madman

There’s been attempts to modify Newton in the past. I remember reading an article on such an attempt in Science back in the 1980s. All came to naught, this might be different.


25 posted on 07/17/2022 2:10:26 PM PDT by Reily
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To: George J. Jetso
Is the Supreme Court also changing the laws of Physics?

No. That is the job of the legislature. Separation of powers, you know...

26 posted on 07/17/2022 2:13:12 PM PDT by 17th Miss Regt
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To: BenLurkin

So what I’d like to know includes the following:

Do we have any idea how much matter has been swallowed up by the dark hole at the center of a given galaxy?

and

Once it’s become part of that black hole, does a given quantity of matter still exhibit the same gravitational attraction it did before?


27 posted on 07/17/2022 2:13:46 PM PDT by Stosh
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To: BenLurkin

MOND over matter.


28 posted on 07/17/2022 2:15:26 PM PDT by HandyDandy (Life is what you make it.)
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To: Reily

“There’s been attempts to modify Newton in the past. I remember reading an article on such an attempt in Science back in the 1980s. All came to naught, “

Einstein “modified” Newton over a century ago.


29 posted on 07/17/2022 2:25:59 PM PDT by TexasGator (UF)
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To: SuperLuminal

I don’t believe in gravity. I’m an agravitist.


30 posted on 07/17/2022 2:27:30 PM PDT by Farmerbob
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To: BenLurkin

...or it could all just be local variations in the fundamental constants of the universe...


31 posted on 07/17/2022 2:37:52 PM PDT by Blurp2 (...though it's tawdry and plain, it's a lovely old lane...)
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To: Samurai_Jack

> matter tells spacetime how to curve.

Even worse, at sufficiently small scales, spacetime doesn’t seem to exist either.


32 posted on 07/17/2022 2:40:58 PM PDT by glorgau
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To: spel_grammer_an_punct_polise

It sucks when you fall off a ladder.


33 posted on 07/17/2022 2:56:07 PM PDT by Sarcazmo ("Sarcasm is the highest form of wit" ~ O. Wilde)
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To: TexasGator

What? Are you and Babble-on smoking dope together again?

Thought I told you two to go eat a pizza and laugh at your hands.


34 posted on 07/17/2022 2:58:07 PM PDT by Sarcazmo ("Sarcasm is the highest form of wit" ~ O. Wilde)
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To: SuperLuminal

The only thing it omits is the role that watermelons and testicles play in quantum theory...

It’s tied together with string theory...

If you tie up your testicles with string they will
swell to the size of watermelons...


35 posted on 07/17/2022 3:04:25 PM PDT by tet68 ( " We would not die in that man's company, that fears his fellowship to die with us...." Henry V.)
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To: tet68

Oh, then they drop off just like watermelons too.


36 posted on 07/17/2022 3:05:40 PM PDT by tet68 ( " We would not die in that man's company, that fears his fellowship to die with us...." Henry V.)
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To: tet68

😂


37 posted on 07/17/2022 3:08:28 PM PDT by SuperLuminal
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To: BenLurkin
Another paradigm shift in physics. These guys are out of control. What if gravity is really a green monster with tentacles that lives in the center of planets and sucks really hard all the time and it gets angry when physicists says it's something else and goes on strike and we all end up floating out into space and dying of asphyxiation? Where would we be then? Except for the out in space part, that is.

Dang physicists.

38 posted on 07/17/2022 3:11:47 PM PDT by Billthedrill
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To: TexasGator

Yes I know.
This was different as I remember the article the supposed need to do it came from finding anomalies in extremely precise measurements of the gravity constant. They thought the 1/r^2 relationship was going to have to be something like 1/r^2.00’something’. Turned it was instrument problems.


39 posted on 07/17/2022 3:12:28 PM PDT by Reily
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To: glorgau

“sufficiently small scales”

Physics on a quantum scale is pretty mysterious. Particles existing in two places at once... Multiverses... This is real Fantastic Four stuff here. There’s a lot to speculate about but not a lot to make conclusions on. For these cases, as Boghossian observes, certainty is an enemy of truth, or... make room for God.


40 posted on 07/17/2022 3:19:07 PM PDT by Samurai_Jack (This is not about hypocrisy, this is about hierarchy!)
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