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originally posted by: Astyanax
a reply to: RussianTroll
Very interesting indeed. Not altogether sure about the MOND angle. The guy seems very sure of his data -- he's made it all public 'to ensure transparency and for the sake of other interested parties.'
More detailed story here
The study finds that when two stars orbit around with each other with accelerations lower than about one nanometer per second squared start to deviate from the prediction by Newton's universal law of gravitation and Einstein's general relativity.
originally posted by: ashisnotanidiot
Or, Gravity is an electromagnetic field occurring at the atomic/subatomic level, not a universal force governed by mass.
Tesla's Dynamic Theory of Gravity.
Gravity would be strongest at it's "poles", and the areas in between would have weakening gravity to the farthest point along the hemispheres...
So basically, celestial bodies would be locked to each other at the gravitational field poles, and traveling between those poles you would experience varying degrees of gravity based on the distance from the poles/hemisphere.
Neither dark matter nor dark energy are needed now. Billions of dollars have been wasted on their research. The Universe does not need some kind of “agent” that influences and bends - the laws of nature themselves are flexible. In the same way, more than a century ago, the ether, which everyone believed in, like dark matter, was discarded. Einstein nailed the ether, Hyun Che nailed dark matter.
originally posted by: RussianTroll
Hello ATS! Today the text will be long but interesting.
The 21st century has truly begun. A truly fundamental discovery has been made that revolutionizes the foundations of physics. First there was Newton, then Einstein, and now the Korean Kyu Hyun Che has joined them. He discovered that in weak gravitational fields both classical physics and the theory of relativity are powerless. And also: no dark matter exists. Relax and stop looking for her. Can these findings be trusted? Let's get a look.
The work of the Korean researcher was publishedin the most authoritative The Astrophysical Journal, that is, it has passed all possible checks and does not contain the slightest inaccuracy. There are few scientific publications in the world that you can trust unconditionally. If we are talking about astronomy, then you can trust this magazine.
Let me briefly remind you of the background. When Newton published his theory in 1687, it worked perfectly. In 1846, based on it, using theoretical calculations, Neptune was discovered. Complete triumph.
It soon became clear, however, that the orbit of Mercury did not obey Newton. The study of Mercury ultimately gave rise to Einstein's theory of relativity and new physics in general. Mercury is close to the Sun, and with such strong gravity, Newton's laws fail.
Already in the 20th century, when studying galaxies, they found that they move differently from Newton’s, and not even from Einstein’s. To save both theories, dark matter was invented. It does not interact with ours in any way, and it cannot be detected, but it attracts. In fact, physicists are afraid like fire of something that “cannot be detected, but it exists.” As soon as ufologists or psychics say this, they are immediately accused of pseudoscience. But they believed in dark matter (though not all of them) and began to search intensively.
Meanwhile, the Gaia satellite has been rotating in orbit since 2013 and doing unnoticed work. It measures distances to stars, and star positions in general. It's just routine, the data never makes it into the mainstream press because it's so boring.
Astronomer from Seoul Kyu Hyun Che was not afraid of melancholy and asked his satellite for information about the orbits of double stars. In general, the fact that the Sun is lonely is rather rare; usually stars are double, triple or more. The Korean was interested in the orbits of relatively close binaries (up to 650 light years - such data are more accurate), and in total he analyzed 26,500 binary systems.
And what did he discover?
Imagine one star orbiting another. The forces of gravity prevent her from flying away. But are they big? Very, very weak. Vanishingly. The sun attracts Pluto much more strongly than the main star attracts its satellite.
It turned out that when gravity weakens so seriously, it... intensifies. This is very strange: you are flying away from the Sun, it weakens its grip, you are almost no longer held by its gravity... and suddenly the Sun seems to be clenching its claws, and you are again in captivity.
It is for this reason that systems of double stars do not fly apart. And we wondered why this was happening.
In science, the reliability of a discovery is assessed using so-called sigmas. The Korean has a 5 sigma level, and for most conclusions even more. This means that his calculations are correct with a probability of over 99.9%. Well, what can I say, everything is clear.
As of August 16, we know that there are now three theories of gravity:
- Newton - for “everyday life”: for example, Newton’s physics perfectly explains how stones fall and cars drive on Earth;
- Einstein - for high speeds and powerful fields. If you launched a satellite, you already need to take into account the theory of relativity. GPS systems do this automatically. If it weren't for Einstein, navigators wouldn't be able to work;
- Kyu Hyun Che – for very weak fields.
It's funny, but forty years ago the theorist Mordecai Milgrom predicted all this and formulated a “modified theory of gravity,” but few people paid attention to this. Thus, on Wednesday, August 16, a new physics, Hyun Che-Milgrom, was born. Milgrom has already commented on the event in the spirit that “it looks like a revolution in physics is happening right now.”
Neither dark matter nor dark energy are needed now. Billions of dollars have been wasted on their research. The Universe does not need some kind of “agent” that influences and bends - the laws of nature themselves are flexible. In the same way, more than a century ago, the ether, which everyone believed in, like dark matter, was discarded. Einstein nailed the ether, Hyun Che nailed dark matter.
Continued below...
originally posted by: crowf00t
Its quite possible that every particle has a centroid and at some point of it centripetal and centrifugal forces flip based on the matter in it's field explaining both the weak and strong forces.
Don't ever count "Newtonian" physics as out... Is a good rule of thumb.
Light I am sorry to say is a constant based on the cosmic background radiation sure there are some theoretical exotic particles that move faster than the "photon" in theory which helps the model they keep forcing to be correct and doing so only allows light to have a so called "speed"... To fit that model.
Fabric is not a good idea to call such weak and strong particle forces swapping a throw and a grab in their inversions... Looking at a rainbow and prysmatic is where such thought experiments arose.
Here's whats funny... People have that as mentioned above just the same since they are also particle based and give of various wave forms of attraction and repulsion either aware of it or not and whats neat is the mind is what inverts as that attraction or repulsion as a force when such other particle masses get near.
Here's something funny but yeah no not really... If a hermit is someone that wants to be alone? Why is a hermitage often built around them? The less it seems someone likes people and pour them self into their work the more they have to beat the bricks off and say leave me alone!
The article is certainly well done and deserved to be published, but the bias in your reporting of this is over the top.
originally posted by: RussianTroll
The work of the Korean researcher was publishedin the most authoritative The Astrophysical Journal, that is, it has passed all possible checks and does not contain the slightest inaccuracy. There are few scientific publications in the world that you can trust unconditionally. If we are talking about astronomy, then you can trust this magazine.
So the previous study done on binary stars, also from GAIA data, show to a confidence level of 16 sigma that MOND is not needed to explain gravitational accelerations.
Previous studies, using Gaia and earlier data, have shown that binary stars that are separated by a specific amount — with revolutionary periods of a few hundred years or less — do obey Newton’s and Einstein’s laws: they orbit one another as you’d expect them to. When wide binaries with separations from 2,000 AU (where 1 AU is the Earth-Sun distance) out to 30,000 AU (about half a light-year) are considered, and only the nearest stars (within about ~1,000 light-years) are considered, the latest Gaia data indicates that Newtonian-like gravity is completely sufficient, and that the MOND-like behavior, which should take over in the low acceleration regime if the idea is correct, is absent. It’s absent, in fact, at the ~16-sigma level: a tremendous significance.
Those two paragraphs explain why we can get completely opposite conclusions from looking at binaries in GAIA data. A lot of assumptions are made since the observation periods are too short to give high accuracy for such distant objects, and either set of assumptions could be in error.
One thing that’s important to note is that Chae and Hernandez select their samples differently from one another and from Banik (who led the earlier study that showed no deviation from Newtonian behavior), and that’s likely the reason why they draw radically different conclusions...
For the wide binary stars in the Gaia catalog, although we have several years of data, it would literally require centuries or even millennia of data to make (high) precision characterization of their orbits. As it turns out, there isn’t even one single system among the Gaia wide binaries that we can point to and say, confidently, “This is what the long-term orbit of this system looks like.”
I'm talking of course about the "large-scale cosmic failures" of MOND, which I think is worth mentioning, but that could be a completely separate thread, and I think we should be open to accepting where the data leads us, whether for MOND or against MOND. We need more time to improve the orbital measurements to resolve discrepancies like those mentioned above.
All efforts to modify gravity run into enormous difficulties on cosmic scales, but one specific modification, despite its large-scale cosmic failures, has proven itself more successful than dark matter on galactic scales: MOND, or MOdified Newtonian Dynamics.