So based on Newton's law, gravity is a force that pull one object to another. contradict to Newton's law, einstein stated that gravity is a phenomenon of spacetime curvature.. Newton's Law is proven by experiment but Einstein's General Relativity still remains a theory..

my questions are how to explain gravity accurately? is there any experiment to prove how gravity works? how can an object produce gravity? thanks..

I read about it like 20 years ago and don't remember the details or never doubt something I can't understand. The way I remember, all element no matter how small is floating in a medium of space we don't know what it is and simply inertial / null medium / force... until identify.

Energy of burning star / sun pushes particles and when collide with another will generate gravity and attract more particles into planets over time, gravity is not permanent and will subside, Mars is thought to have gravity like Earth.

Different does not necessarily mean contradict. As the saying goes, "there's more than one way to skin a cat".

But yes there are differences between newtonian gravitation and general relativity.

But let's tackle the most important part first. First of all, you need to understand what is a scientific theory. That you use the phrase "still remains a theory" implies that you believe a theory is somehow less widely accepted than a ... (what?). A theory is a widely accept explanation of an observation. There is nothing that is stronger than a theory.

A hypothesis is an untested explanation that is not yet widely accepted. Perhaps this is what you had in mind.

Unfortunately, there is no certainty in science. All theories are provisional, to be temporarily accepted, until a better one comes along.

Actually, general relativity fits better with observational data than newtonian gravitation. All scientist today accepts general relativity as more accurate. But it is also more complex. For slower speeds, much below c (the speed of light in vacumn), the predictions of general relativity and newtonian gravitation converges. Therefore, we use newton's law for calculations, when it is adequate, and because calculations is much easier.
http://en.wikipedia.org/wiki/Tests_of_general_relativity

Do we have a physicist here who can better answer this question?

For me, planet create gravity like an dynamo.

The dynamo in your basikal.

Force cannot be destroy, but can be transform/tranfer.

OK. let say, a planet will gravity/(call gravity power) start pusing until his end. then letup...boom, in a small pieces & flow in space. (we call it dust). Then, due to the masive explosion, enegy isolate far far away to separate part.

So, when the gravity power begin to assembly, it take a million light years.
After assemble, it will automatic suck the dusk arround. The size of the planet depand of the Gravity power. Then new born Planet asemble & start to pusing pusing......

this process repeat & repeat. ...

Curios?????

Who first put the enegy (gravity Power) & dust in the dimesional Call Universal.     

Also the same quote:

A mystery of unanswered questions…..
Who are we? Where do we come from?
Where are we going? How do we know. What we think we know?
Why do we believe anything at all?

Countless questions in search of an answer……..
An answer that will give rise to a new question…..
And the next answer will give rise to the next question and so on….
But, in the end, isn't it always the same question?
And always the same answer?

For me, planet create gravity like an dynamo.
The dynamo in your basikal.
Force cannot be destroy, but can be transform/tranfer.

OK. let say, a planet will gravity/(call gravity power) start pusing until his end. then letup...boom, in a small pieces & flow in space. (we call it dust). Then, due to the masive explosion, enegy isolate far far away to separate part.

So, when the gravity power begin to assembly, it take a million light years.
After assemble, it will automatic suck the dusk arround. The size of the planet depand of the Gravity power. Then new born Planet asemble & start to pusing pusing......

this process repeat & repeat. ...

Based on Newton's Law of Gravity:

Newton's law of universal gravitation states that every point mass in the universe attracts every other point mass with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.


And later Einstein produce his General Relativity theory:

According to general relativity, the observed gravitational attraction between masses results from their warping of space and time.

Yes in theory we can explain it. but can we conduct an experiment on it to prove it? can we produce our own gravity? how can earth crust generate gravity? is it the heat? is it the intense pressure? if gravity is generated by heat and pressure, can we imitate the same process thus create our own gravity? i googled also about black hole and neutron star.. it stated that black hole's gravity is so strong even a light cannot escape.. light as we know it is an electromagnetic radiation with no mass at all.. it is an energy, a series of photons.. how can gravity pull something that has no mass? Newton is proven wrong here..

There's no contradiction between Newton's Law and Einstein' s General Relativity theory. Newton does not say how gravity is produced. He only says how it works on bodies with mass. His law describes the part in bold in Einstein's theory above. Einstein's theory explains where gravity comes from.
Gravity exists as long as you have bodies with mass in a system. The formula given by Newton only specifies mass and distance as the variables that affect the force of gravity. If Newton's law does not work, we wouldn't be able to put satellites in geostationary orbit.

Photons has both the characteristics of a wave and a particle. Newton's law is still valid.

Dynamo concept: i saw a japanese who rotate th dynamo, when the dynamo charge enough, Then, his sambung the dynamo to the mini motor, cos the motor rotate, while the motor rotate the dynamo, dynamo create electric & made the motor move.....but can't hold for longer as the dynamo still in improvement....

Other concept like this:

Yes in theory we can explain it. but can we conduct an experiment on it to prove it? can we produce our own gravity? how can earth crust generate gravity? is it the heat? is it the intense pressure? if gravity is generated by heat and pressure, can we imitate the same process thus create our own gravity? i googled also about black hole and neutron star.. it stated that black hole's gravity is so strong even a light cannot escape.. light as we know it is an electromagnetic radiation with no mass at all.. it is an energy, a series of photons.. how can gravity pull something that has no mass? Newton is proven wrong here..

"... Nonetheless, LHC researchers still believe they will either have found the Higgs by the end of next year or confirmed that it does not exist in the form proposed by the current theory of subatomic particles and their interactions, called the Standard Model.
...
According to Cern, Atlas and CMS have excluded the existence of a Higgs over most of the mass region 145 to 466 GeV with 95% certainty."

http://www.bbc.co.uk/news/science-environment-14596367

There's a certain order to the world. Mice get eaten by wolves, motorcyclists get demolished by 18-wheelers and gravity presides over the whole crazy parade, keeping it stuck to the ground like a boss. Understanding where forces rank compared with one another allows us to predict and explain all the different ways in which they will interact. The problem is that gravity, the one force that's involved in just about every interaction that happens here on Earth, is kind of all over the map.

When you look at it up close, gravity is decidedly on the mouse side of the hierarchy. Rub a balloon on your wool sweater (nice sweater, nerd) and pass it over a piece of paper. The tiny electromagnetic charge your sweater transferred to the balloon will lift the paper off the table, overcoming the Earth's gravitational pull. That's the same gravitational pull that tethers the moon in orbit around Earth. Up close, gravity gets its ass handed to it by a bond that's about as strong as worn-out Velcro. But over a distance of 234,000 miles, it acts like the chain on a mace being swung around the head of a planet-sized Viking.

This is what's known as the Higgs mass hierarchy problem. Gravity has a tendency to wreak havoc on scientific hierarchies because the closer you look at it, the more likely it is to disappear. It's predictable when you take a step back and watch it yank things out of midair, but on closer inspection, it completely vanishes. In fact, at the realm of particle physics, gravity is 10 ^ 32 times weaker than the second weakest force.

The Earth's mass is 5.97 x 10 ^ 24 kilograms, which allows it to generate the supremely powerful and inescapable force that has held you on the surface of the Earth since you popped out of your mom. The fact that the stray electricity hanging out on your sweater could counteract it makes as much sense as a starving African child being able to bench-press a skyscraper.

Gravity has a problem:

Sources:

http://profmattstrassler.com/articles-and-...rarchy-problem/
http://library.thinkquest.org/27930/forces.htm
http://www.cracked.com/article_19668_6-sci...ce-physics.html