kba

I saw the question in the title of topic and answered to its author. Not to you. You asked other questions, and I answered to you too.

All what you need are known mass of Universe, Universe's size, and Newton's laws. My previous post need the correction. I said "half of Universe' size. Actually, the distance is about 1/2-1/3 of half Universe's size - if we consider Universe's volume as ball. Approximately half of Universe's size we can consider with full mass of Universe. I already wrote formula to calculate number in my blocked topic: a = MG/R^2 = 0.00000000868 m/s². It is nearly to 1e-8 m/s², but anyway it is smaller than 1e-7 m/s². M, G, and R value you can take from Wikipedia. This is correct if you consider gravity as static force. But I declare that gravity is dynamic one. This is correct for any frame which is under only gravitational force. According to equvalence principle, bodies, that falling in the uniform gravitational field together, wouldn't register relative acceleration of each others. Look, even GR predicts that bodies inside uniform gravitational field will accelerate. You can consider any inertial frame as accelerated by means of gravity of half mass of Universe (as in the uniform gravitational field) in any direction. Only relativelly moving observer could register its acceleration. And any gravitational frame you can consider similarly.

You can measure acceleration value a=1E-9 m/s²? Such acceleration we have from mass of half Universe on the distance equal to approximately half size of Universe. It is because inertial acceleration is caused by gravity of half Universe on the movement direction.

IMHO it doesn't matter for for such scales of galaxies' sizes and their rotation speed. But I agree with following: As I know, physicists use incorrect conclusion of Inertia Law. There is no movements without forces! Therefore, inertial motion is accelerated. It means that stars in the galaxies should continuously accelerate and go away from galaxy center. I said and showed it in my closed (blocked) topic, here. Astronomers at early 20th century lived without dark matter, and they was sure that everything was taken in account and correctly calculated. Now your opponents assure you that dark matter is real and "everything was taken in account and correctly calculated". 😄 Next step is a correction of basic principles of Physics to explain astrophysical phenomenas, again without dark matter. 😉 After it everybody will say that "everything was taken in account and correctly calculated"

It just changed its name ). Almost everyday I receive an anonce of published paper about some "unification" theory from my only e-mail subscription.

It would have to explain simpliest action of Matter. If it could define simpliest interactions, it could construct the Universe. Like you build the house using standart bricks.

Is it means that I can suggest my idea for DM here?

Not the same way. According to hypothesis of DM, it is concentrated near to galaxy, holds stars inside the galaxy. But I think that stars aren't holded there. They moving around the center of galaxy and out, their velocity slowly increasing due to gravity of far galaxies. Calculation is simple, it is based on known mass and size of Universe. But, to get expecting result, we have to take in account dynamical nature of gravity.

IMHO, MOND is speculative theory. Any theory should define law(equation, formula) of based on some model which explains why exactly such law physical value dependency was used. Does MOND do it? I'm not sure. As I understand the philosophy of nature, we have to change the main paradigm of free(aka inertial) motion to understand DM phenomenon. Any motion at any time isn't free (i.e. non enforced). Only forces support the motion. The motion by inertia is illusion that such motion is free (non enforced). Only the body, keeping in rest, forces do not act to. As I have found, the gravity is a force which dynamically increasing during the motion. And such force makes any body or particle to accelerate its moving, if they are do not undergo for action of other forces. Thus, all bodies in the Universe have been accelerated, including stars. That's why their velocities do not decrease while they moving around the galaxy centre. The evolution of galaxy can be represented as stars moving around its center and slowly retires from it due to acceleration of [pseudo free] inertial motion. Such motion, actually, is provided by gravity of othe galaxies in the Universe. Rough calculation defines acceleration of any [free] motion equal to approximatelly 1E-9 m/s². DM doesn't hold the stars, as blocked inside the galaxy, on the stable orbit. That's why we observe various types of galaxies. Highly likely, galaxy evolution goes through various stages from quasars to scattered galaxies.

How about such newest evidence (not single) - "Runaway 'failed star' races through the cosmos at 1.2 million mph"? Read about it here - https://www.livescience.com/space/astronomy/runaway-failed-star-races-through-the-cosmos-at-1-2-million-mph Almost all astrophysical news of last 2-3 years, breaking the view to Universe providind by Standard Model and Standard Cosmology, are evidences for Dynamic Gravity theory. Now, what scienists going to do? Just will be waiting for complete invalidation of Standard Physics for Cosmology?

Other one phenomenon (and evidence) which can be explained by means of Dynamic Gravity theory and which proves it - is an "Antimatter detected on International Space Station could reveal new physics". Read about it here https://www.livescience.com/physics-mathematics/particle-physics/antimatter-detected-on-international-space-station-could-reveal-new-physics or here https://www.labrujulaverde.com/en/2024/07/antimatter-detected-on-the-international-space-station-reveals-unknown-physics/ Standard Model of particles cannot explain how this antimatter was synthesed (in the explosion like cosmic ray generators) to be accelerated, but Dynamic Gravity can explain - it was created in the ordinary mechanism, but speed up by gravi-inertial acceleration. ...to be continued for new evidences.

And again. The next evidence for the Dynamic Gravity is here https://www.spacedaily.com/reports/New_Study_Reinforces_Evidence_for_Modified_Gravity_in_Wide_Binary_Star_Systems_999.html also here https://medium.com/@gabriel.macedo.brother/new-theory-for-gravity-46284969714c An acceleration of the inertial movement is more viewable on the far distances!

https://www.livescience.com/space/unexpected-cosmic-clumping-could-disprove-our-best-understanding-of-the-universe also https://physics.aps.org/articles/v16/193 This is one more reason to consider conception of Dynamical Gravity.

T.Rex was able to have such big head because he hadn't normal-sized "hands", so his body was perfectly balanced for walking on the land.

According to what?

Like being at the center of mass in the geocentric and heliocentric model of the Universe.

I wrote "it sounds like", not "=". It's how do you like. The name of article is "Speed of the Milky Way in Space". May be "velocity of the milky way" isn't equal to "Speed of the Milky Way" for you and for article's authors? I don't know. Or/and "Space" isn't equal to "the universal level" by Bufofrog’s? May be ask him?

It sounds like a heliocentric or early christian geocentric model of Universe 🙂 Just read this

Yes, of course. Evenly distributed mass is better for uniform acceleration. It connected with dynamical nature of gravitational force. Do you know about "retarded potentials"? If no, then I have to provide this link for you. How about an extra velocity of stars on numerous galaxies which scientists connect with mistiqal Dark matter? Just look at name of topic you comment ) And, can scientists directly register a = 0.00000000868 m/sec² for our Galaxy or its stars?

Did you already considered it? In the absolutelly empty space with no other bodies, particles and fields. Do you know what Aristotle said about it?

For what? Are you waiting that calculations will show something different that Newton's mechanics? Only calculations I can provide right now is a caluculation of global gravitational acceleration (inducted by a forces of "faraway stars" - by "Mach's principle" - that support any motion). This acceleration, accordingly to estimated mass and size of Universe, is about: a = MG/R^2 = 0.00000000868 m/sec. What difference on a gravity force between the Earth and Moon in the static you can get with such value of acceleration? Just a microscopic one. At the same time, the global acceleration is able to accelerate the proton of any star upto: v=273.7*10^9 m/sec per 1 billion years - it's almost the speed of light! And it can accelerate the stars in the galaxies, that speeds are different from described by Newton's mechanis, aspecially on their periphery. Do you think that higher velocity of these stars is because of "Dark matter", which holds the stars on their orbits, and which cannot be acted by other forces? I do not think so. I think that spiral look of galaxy shows us how stars goes away from its center, accelerating by global acceleration of so-called "inertial motion" (which, actually, isn't uniform and stright lined)

Yes, if this body is free. This declaration of Newton's First Law is absolutely incorrect. There is no uniform motion for free bodies. All of them or keep in rest, either moves with acceleration which you cannot register locally, at the short distances.

My interpretation of inertia law: A body will not move, unless acted upon by a force. Just compare with Newton's First Law. Still,

I don't understand what do you mean with your example. Your book in the same time does move with your table arount the Earth's axis, around the Sun, around the Galaxy's center, etc.

#AmaterasuParticle is the next evidence for my theory after #OMGParticle. Should wait for next one? 😉