[pasala (OP)]

As per Newton about Time:
“Absolute, true, and mathematical time, in and of itself and of its own nature, flows uniformly,”  wrote Isaac Newton in his masterwork, the Principia. Newton was arguing that, even if our clocks might be imperfect, real time flows at a steady rate, serving as a kind of master clock for the universe. Newton’s definition meshes with our commonsense impression of time — that it passes at the same rate for everyone.

Whatever assumed by Newton is 100% correct.   

As per Einstein:
“In the context of special relativity, time cannot be separated from the three dimensions of space, because the observed rate at which time passes for an object depends on the object's velocity relative to the observer. General relativity also provides an explanation of how gravitational fields can slow the passage of time for an object as seen by an observer outside the field”.

Here also, whatever assumed by Einstein is 100% correct and it is also tested and proved. 
01  In a strong gravity field time dilates.
02  Time also dilates due to acceleration.
No doubt about those things and they are valid.

Ok, let us discuss this issue with simple examples:
01  Mr X and Y both are classmates and are of equal age, have joined an airlines office on the same day, Mr X as pilot and Y as supervisor.  As per company rules, on attaining the age of superannuation i.e., 60 years, both were retired on 30th October, 2020.  Both were having atomic clocks.  On the day of retirement, Mr. X argued that, I had worked as a pilot and spend half of life in moving from one place to other and my watch dilated by two days and I am younger than Y and I have to retire in the month of November, 2020.

02  In another example, same people, X and Y both are classmates and are of equal age, have joined a tourist office, Mr X was given posting to a high gravity place and Mr Y was given low gravity place.  Both were having atomic clocks.  At the time of retirement, Mr X argued that, he was in a high gravity area and thus his clock dilated by two days and he is younger to Y by two days and he has to retire in the month of November, 2020.

This is another important example:
One person,  Mr.E has announced that he had developed a spaceship, which can go, at the speed of light.  Total world looked at him with awesome wonder.  Now he planned a 10 year tour, to go outside our solar system and to visit other solar systems and to say hai to aliens.

One of his fried, Mr. james, Engineer working in design section, equal age came to wish his friend.  He provided his friend with a nuclear watch that can count time with pin point accuracy.

After 10 years, when Mr. E returned back after his tour, several things happened.  As per company rules, Mr. james retired on attaining the age of 60 years.  Board also has taken extra-ordinary decision of limiting the age of CEO to 60 years and declared E’s retirement.
Before the Board, Mr E argued:
As my spaceship attained the speed of light, the nuclear watch provided by my friend completely stopped working, in other words time dilated.  On reaching back Earth, it once again started working and hence my age is just 50 years only.

Ok, if your watch is not dilated, your age also is not dilated, isn’t it?, one of the board member told him.  What is the link between, working of clock and your age.
Ok, sure, if my clock works properly, I will be able to calculate my age properly, as per earth days, replied Mr. E.  It also helps me to calculate distance travelled within time.
Ok, you are far away from our solar system, there are no day and nights.  But you are within our universe only, another board member told him.
If your clock works or not, master clock continues to work.  Nuclear watch provided by your friend is only mechanism to calculate age and distance travelled, board member replied.   
But, we are having perfect record, how many days you have spent in space, board member replied.
Mr E was shocked, he looked at other board members and told them that nuclear watches are so perfect that we can note changes in the movement of Earth.
That is right, time is only an instrument to record events and nothing else. For each planet there is a master clock and you have to adjust your clocks as such.  For these master clocks there is universal time.  If time dilates due to acceleration or gravity, they are mechanical problems to be solved as such, another board member.

Yours
Psreddy

[pasala (OP)]

Quote from: pasala

    light coming from other solar systems is not taking several curves or moving along with these paths.

Light coming from distant galaxies is often bent by the presence of massive galaxies (or galaxy clusters) between the distant galaxy and us. This can produce rings, arcs ar multiple images.

Mr evan_au
At right time, you have given best clue.  A galaxy is held together by gravity, in other words, curved space time.  So, space fabric is limited up to the end of each galaxy.  Light while entering a galaxy is bent by the curved space time or gravity. So space time within a galaxy is not empty..

[Kryptid]

Newton’s definition meshes with our commonsense impression of time — that it passes at the same rate for everyone.

Whatever assumed by Newton is 100% correct.   

Here also, whatever assumed by Einstein is 100% correct and it is also tested and proved. 
01  In a strong gravity field time dilates.
02  Time also dilates due to acceleration.
No doubt about those things and they are valid.

You are contradicting yourself. Time can't pass at the same rate for everyone and also not pass at the same rate for everyone.

[pasala (OP)]

Newton’s definition meshes with our commonsense impression of time — that it passes at the same rate for everyone.

Whatever assumed by Newton is 100% correct.   

Here also, whatever assumed by Einstein is 100% correct and it is also tested and proved.
01  In a strong gravity field time dilates.
02  Time also dilates due to acceleration.
No doubt about those things and they are valid.

You are contradicting yourself. Time can't pass at the same rate for everyone and also not pass at the same rate for everyone.

giving judgement without evidence, isn't it?

[alancalverd]

Time can't pass at the same rate for everyone and also not pass at the same rate for everyone.

Isn't that the essence of relativistic time dilatation? All observers see their own clocks keeping perfect time, but each sees the moving clock or the clock in a different gravitational field as going faster or slower. 

[Kryptid]

giving judgement without evidence, isn't it?

No. A thing cannot be true and false at the same time. That is basic logic.

Isn't that the essence of relativistic time dilatation?

Time passes differently for different observers in relativity. It passes exactly the same for different observers in the Newtonian view. In one view, time is relative. In the other, time is absolute. They both cannot be true simultaneously.

[evan_au]

Newton’s definition meshes with our commonsense impression of time — that it passes at the same rate for everyone.

To date, pretty much all humans have lived:
- In the same gravitational field, on the surface of the Earth (from deep gold mines to the top of Everest)
- Travelling at the same velocity (30km/sec around the Sun, and 230 km/sec around the galaxy)
- With an innate sense of time that often seems to vary by +/-10% or more (from excitement to boredom) and sometimes stops altogether (asleep)
- So any differences in the rate of time will be totally imperceptible to human senses
- Einstein agrees with Newton in this

However, if you get some very accurate atomic clocks, and put them 20,000km above the Earth's surface, in an orbit which moves much faster than the surface of the earth, then the effects of time dilation become noticeable.
- Atomic clocks in the GPS satellites are intentionally calibrated to be "wrong" by 38 microseconds per day (on the surface of the Earth) so they will be "right" when they are in their intended orbit. If this correction were not done, your GPS receiver would be off by about 10km/day.
https://en.wikipedia.org/wiki/Global_Positioning_System#History

I am talking about curved paths and you are talking about light bending at galaxies.

When light is bent around galaxies, it follows a curved path.

Same, same...

tell me... how masses curves the space time around them.

I don't have to - because Einstein already did it.

Unfortunately, he had to use tensors, and I didn't study tensors at university, so I can't explain it to you.

But I can see its effects in things like Eddington's experiment and Einstein rings,
- and in the science fiction movie Interstellar , where physicist Kip Thorne had the computer graphics animators feed Einstein's equations into the computer graphics system to show how a background of stars would be distorted by the presence of a black hole.

[Xeon]

Quote

    Einstein theories breaks not at the black holes but at the space time itself

The Solar system exists in spacetime.
- Einstein's theories have proven amazingly accurate within the Solar System.
- Therefore, Einstein's theories do not break down in spacetime
- But Newton's theory does break down at the level of the Solar System (because it does not take spacetime into account).

Ok, if it is not, tell me, what this 3 dimensional space time consists of.  For that "what exactly this space fabric is" and how masses curves the space time around them.

Any thing everywhere

[Xeon]

Quote

    Einstein theories breaks not at the black holes but at the space time itself

The Solar system exists in spacetime.
- Einstein's theories have proven amazingly accurate within the Solar System.
- Therefore, Einstein's theories do not break down in spacetime
- But Newton's theory does break down at the level of the Solar System (because it does not take spacetime into account).

Ok, if it is not, tell me, what this 3 dimensional space time

A measurement

[pasala (OP)]

Well, it is surprise to see how objects gets inertia:

"Inertia is an inherent property of an object to resist any change in its state of rest or of uniform motion. All objects continue its state of rest or of uniform motion along a straight line unless it is acted upon by an external force. This tendency of objects to continue its state of rest or to keep moving with the same velocity is called inertia".

Well, it is surprise to see, what is this "inertia" i.e., continue to moving with the same velocity.  Einstein taking this feature, simply added to gravity. 

All objects continue to be at rest or stationary only.  No object, by nature  gets the quality of 'inertia'. 

It is true that Sun is not at rest or stationary, it is rotating against its axis. 

It is not the mass of the Sun but something i.e., medium through which Sun is controlling all other planets.  It is commanding other planets, "I move, you move".   

Suppose if Sun stops rotating what happens to other planets.  As assumed by Einstein probably it takes 8 minutes for the light to stop influencing curved space time of the Earth.  But, even if, pressure/force stops, Earth continue to move some more time before coming to at rest or stationary.

Yours
Psreddy

[Kryptid]

Suppose if Sun stops rotating what happens to other planets.

There would be practically no effect. The planets would keep right on orbiting like usual.

[pasala (OP)]

Suppose if Sun stops rotating what happens to other planets.

There would be practically no effect. The planets would keep right on orbiting like usual.

That is right, when i talk about inertia of other planets, what about Sun.  Sun also is not at rest or stationary, it is moving against its axis.  What makes Sun to rotate against its axis.  Here, Einstein's General relativity comes back into my mind.
"Mass tells space time how to curve and curved space time tells mass how to move". 

That is right.  It is true that there is curved space time.  But basic thing is how this curved space time or gravity tells or influences or drags mass.                     

[pasala (OP)]

Well, there are wonderful and unbelievable things in this universe.  There is no answer, as of now, from science.  It is known fact that, Earth is spinning with almost exact speed and rotating against Sun at exact line and length.  As there is no answer, we have simply named it as “inertia”.

It is a big question, why don’t planets remain at rest or stationary.  When we talk about planets, it includes Sun also.  We are taking space as empty or devoid and nothing can cause or affect the rotation of Earth.  We are thinking from the other side of the coin. 

As there is no obstruction, since space is empty, Earth is rotating and also going round the Sun. Earth orbits the Sun in a slightly flattened circle called an "ellipse."  In geometry, the ellipse is a curve that loops around two points called "foci."

Ok, suppose let us take space as empty or devoid, what makes earth to follow a elliptical trajectory.  This trajectory is also pre-defined.  In an empty space there are no trajectories.  If Earth is capable of taking its own decision, it need not go in a fixed line and length around the Sun.  Since total space is empty, at times it can go up to the end of solar system, perigee and apogee differently.

Well, if we observe, how our solar system is working, it clearly tells us that all paths are pre-defined and planets have to follow it.    For this, we are taking this space time as curved or distorted by Sun.  Isn’t it something in-different.

Ok, here, there are several things, I don’t want to go deep.

Now we are discussing about “inertia” of objects:
Motion is when an object moves from one place to another, while force is what causes an object to move or to stop moving. Examples of force include the kick that causes a ball to move across the field and the gravity that slows and eventually stops that ball from moving.


Types of Inertia
•   Inertia of rest - An object stays where it is placed, and it will stay there until you or something else moves it.
•   Inertia of motion - An object will continue at the same speed until a force acts on it.
•   Inertia of direction - An object will stay moving in the same direction unless a force acts on it.

Well, as per our scientific knowledge, we knew that Sun is rotating against its axis.  Why don’t the Sun be at “inertia of rest”.  It is in the second law of inertia, i.e., “inertia of motion”.  Basic question is what makes it to continue to rotate at the same speed. 

For all this, there is answer from black holes:
Black holes are not near to us, but it is a strangest and fascinating object to be studied.  It is true that we are in a strong gravity field, but we are not aware of “what exactly is this gravity”.  Actually I had treated study of black holes as a waste of time and i could not understand why Einstein had touched this black holes.  But, it appears there is a reason.

Black holes formed by the collapse of individual stars are relatively small, but incredibly dense. One of these objects packs more than three times the mass of the sun into the diameter of a city. This leads to a crazy amount of gravitational force pulling on objects around the object. Stellar black holes then consume the dust and gas from their surrounding galaxies, which keeps them growing in size

Black hole is developed after collapse of massive star, in other words it is the final stages of a star.  We are all studying about event horizon, gravity, time dilation, light escaping, since these are all strangest things, we study them with lot of interest and curiosity. 


These things are one side of the coin only. 

Stars are born when large gas clouds collapse under gravity. They form hot cores that gather more and more gas and dust until a protostar is formed. If only a small amount of gas is around, then only a small star will form; if a large amount of gas is present, then a massive star will form.

Suppose, let us assume that, similar to that of human life, a star has 100 years or 100 events in fourth dimension:
01  When a large gas clouds collapses under gravity,  paves the way for formation of star.  It is the first stage or year or event.
02  It start gathering more gas clouds and dust particles from surrounding and start growing and paves the way for second event. 
03  At the second stage or 50 years  the star  is at the massive stage and there is no scope for further expansion.
04  After the second stage, there is no scope for expansion and the atoms of light elements are squeezed under enough pressure for their nuclei to undergo fusion decreases.
05  As the hydrogen fuel start exhausting at a particular place, it appears as dark area or sun spots. 
06  Upto 1% to 5%  of the mass of the star, dark area or sun spots are bearable.
07  As the size increases up to 10%, gravity tries to occupy this place.  Gravity tries to move according to the decrease of hydrogen fuel, it may be either clockwise or anti clockwise. 
08  However up to 10% it is bearable and there is no any scope for any unexpected changes. 
09  If the dark area increases more than 10%, gravity moves to that area and drags mass of the star and it start rotating slowly.
10  If the dark area increase more than 20%  rotation speed increases and start stabilizing.
11 If the dark area increases more than 40% of the area of star, gravity start moving towards the mass.
12  Here rotation will continue as long as the charge is towards the sides of the mass.
13  One’s the charge or gravity start moving towards the centre of the of the mass, “star turns out as a black hole”.

All the stars while growing, up to 50% of the age, are all will be at “inertia of rest”.  As the hydrogen plasma start exhausting, a gap is developed, dark area.  Strong gravity surrounding the star try to occupy this gap.

This, we can see in thought experiments also.  When the cabin of the space ship is blocked in a strong gravity field, there is gravity.  As long as the engine fires, there is no scope for internal space time to interact with the outside space time and there is  in-distinguishability.   One’s the space ship reaches destination, internal space time inter- acts with the outside space time and adjusts with the outside space time.

Finally the third point “inertia of direction”.  We assume that since space is empty, as there is no obstruction, all the planets moves in specific direction is incorrect.

Unless there is certain amount of force or pressure, to move in a specific line, and keeping them in a particular trajectory, all planets will go differently.

Yours
Psreddy

[pasala (OP)]

DO GRAVITY BENDS LIGHT?:
Well, of course it is known and proved that Gravity bends light.  But, in my view, gravity is not bending light and light only following path of Gravity.  Ok, let us discuss in detail.

In Newton's Universe, that stage was flat, empty, absolute space. Space itself was a fixed entity, sort of like a Cartesian grid: a 3D structure with an x, y and z axis.

In 1907, Einstein's former professor, Hermann Minkowski, made a brilliant breakthrough: he showed that you could conceive of space and time in a single formulation. In one fell swoop, he had developed the formalism of spacetime. This provided a stage for particles to move through the Universe (relative to one another) and interact with one another, but it didn't include gravity.

If there were no such thing as the gravitational force, Minkowski spacetime would do everything we needed. Spacetime would be simple, uncurved, and would simply provide a stage for matter to move through and interact. The only way you'd ever accelerate. Minkowski spacetime is flat and therefore light travels in a straight line.  As per Einstein, there is gravity near to all huge masses and it bends light. 


How light travels:
         
01  If the elevator is at rest or stationary, there is gravity inside the elevator and the ‘X’s weight continues to be 75 kgs only, light moves from one hole to other.

Now, let us imagine that Sun is at rest or stationary.  There is no movement or change in gravity field.  Light entering gravity field of Sun, moves out.  Here there is no question of bending

02  We must remember that unless there is a change in the movement of elevator, up, down, there is no effect at all.  It is also proved that something is changing in the elevator. It is true that there is gravity inside the closed elevator and X’s weight is 75 kgs only.  When the elevator is lifted, we must remember that we are lifting the frame of the elevator only.  In turn elevator lifts the things therein, including gravity field.  When the elevator is lifted, gravity field moves downwards, pushing you downwards and it tells us that gravity field has got certain amount of weight and it exerts pressure/force.   

It is true that there is strong gravity, surrounding space time of Sun.  It is a big question “what exactly is this curvature” and how it came into existence.  As per General relativity, “matter tells space time how to curve and curved space time tells matter how to move”.

So, unless there is a change in the gravity field of Sun, no impact can be noticed.


03  If the elevator accelerates forward:
Here though light source is relative to the elevator, the light beam bends downwards, equal to the acceleration of the elevator.  When the elevator is at rest or stationary, light beam moves out through the other end.  As the elevator accelerates forward, we are moving elevator only and in turn it lifts the gravity field and light beam travels along with the gravity field. If there is no relevance, in between light and gravity, light will move out through the other hole.
But, though the source is relative, the light particles moving through gravity remains or continues to moves according to the movement of gravity.    

For so many reasons, if the Gravity surrounding the space time of the Sun start rotating, it drags the mass of the Sun. 
Now, Gravity field surrounding the Sun is not at rest and it is moving. Light while entering gravity field, follows geodesics.  But, here gravity is not bending light.  Here, lensing is the difference in the movement of gravity field. 
There is no bending of light, it is just due to the movement in the gravity.

04  If the elevator accelerates downwards:
Gravity field inside the elevator moves up.  The person inside the elevator is in free fall. If the light source is at the bottom, since gravity is moving up, it follows it and being bend accordingly.   

Ok, Sun is rotating at anti-clockwise.  If the light enters from clockwise or in opposite direction.  In such cases also there is lensing.  Gravity field moves in opposite direction and the light particles are dragged in opposite direction and lensing is upward direction.

05  If the elevator accelerates at the speed of light. 
It is very difficult to imagine. In such case there is no lensing at all, light particles and gravity got no difference at all.     

Weird example for this is black holes.  Here there is no light bending at all.  Light beam entering event horizon, moves along with other particles. Now a days, it is a big topic, does light escapes, event horizon.

In my view, yes it can.  We will discuss it at a later date.

Conclusion:
Speed of light is constant.  As per Einstein, all masses curves the space time around them, in other words Gravity.  Except this curved space time, total space is treated as empty.  Tensors, defines this curved space time but there is no explanation on how this curved space time came into existence and what exactly it consists of. 

It is true that space time near to the masses is curved or altered by masses.  Ok, what about space time in between two masses.  We are taking this as empty. 

That the speed of light is a constant is one of the most important facts about space and time in special relativity. That fact gets expressed geometrically in space time geometry through the existence of light cones, or, as it is sometimes said, the "light cone structure" of space time. To see that structure, we imagine an event at which there is an explosion. Light will propagate out from it in an expanding spherical shell.  In a two dimensional space, it will look like an expanding circle.


So, light will propagate through explosion..  Ok, in case if the source i.e., Sun rotates, light particles are released with certain amount of force or pressure and hence moves up to the end of the solar system.

So, this is the base or foundation for formation of solar system.

Yours
Psreddy

[puppypower]

Friends,

It is true that science developed a lot.  We know several things and we are able to carry out research in space and we are sending rockets to other planets. 

I think there is every need to revise the present existing theories.  I don't think it is so good, going by ants perception,  trampoline  analogy.  Ok, they may be correct, let us discuss to have "What exactly is gravity".

Yours
Psreddy

If you look at gravity in action, what it does is attract and gather mass and cause the local space-time reference to move in the direction of the speed of light reference. The black hole, which is the pinnacle of gravity in action, contracts space-time to nearly the point reference, that the speed of light velocity would do in SR. Since this movement and direction of matter is spontaneous under gravity, this is the direction of lowering potential, implying the speed of light reference is the ground state that gravity seeks.

Gravity is also modeled as an acceleration, which has the units of d/t/t. Therefore, gravitational acceleration is two parts time and one part distance. It is space-time plus time. The first time vector is connected to space as space-time. While the second time vector is connected mass and matter. The gravitational force, via its induced pressure and work/heat, causes matter and energy transitions to speed up. For example, the fusion core of the sun has the fastest frequency transitions; for matter and energy, even though GR predicts that space-time slows in the center of gravity. The two time vectors go in different directions. Gravity adds time potential to space-time, that impacts matter differently from the reference affects.

What the second time vectors does, which is not addressed fully by GR, is add pressure and heat  to matter and mass, causing phase changes, and faster transitional states, that allow entropy to increase, even in confined spaces; second law.

For example, If we pressurize water vapor into liquid water the entropy lowers. As liquid water is pressurized by gravity, the entropy of the water starts to increase. This anomaly is connected to hydrogen bonding anomalies, that make water very unique in the universe. As we increase pressure and temperature even further, water continues to change phases into higher and higher entropy states. The core of the earth has conditions that may allow metallic water, which expresses entropy through its various electron and proton conductive properties.

The second law induction is also an artifact of the speed of light reference being the ground state. The speed of light reference contains implies zero free energy; ground state. This implies that the speed of light reference has infinite entropy. Gravity is moving matter to the lower free energy potential of the c-reference, as well as toward the higher entropy of the c-reference.

G=H-TS, Where G is the Gibbs free energy, H is enthalpy and T is temperature and S is entropy. The minus sign requires S to increase toward infinite to outweigh any internal energy affects H within matter. This makes G=0.

The expansion of the universe causes energy to red shift. What that does is lower the energy value of energy. Longer wavelength energy can do less work. This is also a reflection of moving photons toward the zero energy of the c-reference. Both gravity and expansion are paths toward the same place; lowest energy, highest entropy and c-reference.

Gravity is not an independent variable, but rather is an artifact of mass and matter having departed from the ground state at speed of light, during its creation. It must now return home, but it cannot do this directly, since matter cannot go the speed of light and return directly, without equal amounts of antimatter.  It cannot go backwards in time, since that ship has sailed.

The time potential : t2, is toward the future. It needs to find new ways home; new future instead of the old past. The analogy is tunneling through a mountain to the other side. Once you get there, there is an avalanche that seals the tunnel. One needs to get back to the other side, but now we need to do it another way, which is the long way, around the mountain. We lost anti-matter, so matter cannot tunnel back to c by combining with anti-matter. Gravity helps get mass and matter  around the energy barrier, back to the ground state.

[Bored chemist]

The speed of light reference

You keep trying to hijack threads with this idea; but you refuse to explain what it means.
Please stop.

[pasala (OP)]

DO GRAVITY BENDS LIGHT:
This is in continuation to the previous one.  Really, do gravity bends light.  No, not at all.  Gravity is not bending light, it is only an indication, how or where gravity is moving. 

→ Well, it is true that there is strong gravity inside the elevator.  There is no change or effect unless the elevator is moved or changes its position.  It is also proved that something is changing in the closed elevator.

→ When the elevator is accelerated, frame lifts the gravity field, resulting in additional concentration of gravity.

→ If weight, we are experiencing on Earth is due to Gravity, additional or extra weight is also due to additional gravity.
 
→ It all depends on the density of the field. 

→ It clearly tells us that Gravity is nothing but density of this field.

BENDING OF LIGHT IS AN INDICATION:

→ When the elevator is at rest or stationary on the ground, there is gravity inside the elevator and Mr. X’s weight is 75 Kgs only.

→ Now, if you allowed a light beam from outside to enter one side of the elevator through a hole, If there were no relative motion or relative acceleration between the elevator and the light source, the light beam would travel straight and moves out through the other hole.

→ If the elevator is lifted, in turn, literally it lifts the gravity field, resulting in additional gravity at the bottom, which pushes or moves you to the sides.

→ Now light beam bends according to acceleration of the elevator.

→ If the elevator is at rest, gravity field is also at rest or stationary only.  In such case light particles moves straight.

→ If the elevator is accelerated, gravity field moves down.  However light source is relative to that of elevator.

→ Though the gravity field moves down, light source is constant.  When the elevator is at rest, light particles have moved in straight line.

→ When the source is relative to elevator, what makes the light particles to move at the old route, without deviating.
 
→ Though there is a chance to deviate, light particles are not leaving en-route.  It warrants lot of research in this arena.

So, gravity is not bending light.  Light beam that entered strong gravity field of Sun tries to flow straightly without deviating.  But the Gravity field is not constant, it is moving and thus it appears that it is bending light.  Light bending, net difference is change or movement of gravity field.

DO SPACE WARPS UNDER ACCELERATED MOTION:
That is another incorrect idea of Einstein.  Special effects, time dilation and length contraction are different and no relevance to this. 

“Matter tells space time how to curve and curved space time tells matter how to move”. 

Light bending clearly tells us that it is not matter, curved space time or gravity is also moving.

Yours
Psreddy

[evan_au]

Suppose if Sun stops rotating what happens to other planets?
....how this curved space time or gravity tells or influences or drags mass.

It is true that there is an effect called "Frame Dragging", predicted by Einstein's relativity.
- It is an extremely subtle effect, and was only demonstrated in delicate satellite experiments in the past 10 years - and then only to a fairly rough approximation.
- If the Sun stopped spinning, the frame-dragging effect of the Sun would cease, and this would have a tiny effect on the orbit of Mercury, only observable over centuries.
- It would have almost no effect on the Earth

The Frame Dragging effect is thought to be a significant factor in the relativistic jets produced by supermassive black holes at the center of quasars.
- But the effect is negligible for an object like the Sun.

See: https://en.wikipedia.org/wiki/Frame-dragging

[pasala (OP)]

Quote from: Pasala

    Suppose if Sun stops rotating what happens to other planets?
    ....how this curved space time or gravity tells or influences or drags mass.


It is true that there is an effect called "Frame Dragging", predicted by Einstein's relativity.

"Frame Dragging":
Einstein's theory of general relativity predicted that the space-time around Earth would be not only warped but also twisted by the planet's rotation.

Ok, suppose, if Earth rotates i.e., inertia, in such case there is possibility of Frame dragging.  But there is every need to decide what is this inertia and how planets have got this inertia.  When we don't know, how a planet is rotating, we simply name it as inertia.  In all, if inertia is the quality of planets, what makes them to rotate against themselves and also to go round the Sun in a perfect line.

Frame dragging is possible only when mass rotates and drags the surroundings.  But..
"matter tells space time how to curve and curved space time how to move".

In such case it is the curved space time that is dragging mass.

Light bending clearly tells this.  There is movement of curved space time or Gravity.

[talanum1]

Spacetime is not curved by gravitons. There is a base space that is flat and continuous and made of the interval: [0,1). Then gravitons come and make images of points that are displaced relative to these intervals. This way we can also account for Electromagnetism curving spacetime, as well as the other forces.