Has there been any further steps forward on what causes gravity?

[Anubis08]

Just as the title says

 

[jagec]

There was, but then the black helicopters came and we never heard from him again

Naw, scientists still aren't sure.

 

[Anubis08]

Oh, well. The oldest force (been around since the existence of mass (at least I assume so)) and we still ahve no freaking clue about it. We do better figuring out stuff that we glimpse for seconds than something we have always. That is irony.

 

[silverpig]

What do you mean what causes it?

Energy curves spacetime around it. World lines follow geodesics in this spacetime. Curved worldlines are accelerated and thus feel a force. Thus, any object in the curved spacetime around a massive body travels a curved world line and is accelerated, feeling a force.

 

[imported_FryLock]

I believe that it is a result of zero point energy, and its interaction with matter. When searching for a page to link, I found this one that actually explains the possibilities exactly as I had envisioned them.
http://www.calphysics.org/zpe.html

 

[f95toli]

There are several experiments running where people are trying to detect gravitons, so far no one has succeded but it is definitly a very active field.

 

[montag451]

I was speaking with someone who does research at the Rutherford-Appleton.
They reckon within 25 years, a particle will be found that will fit the graviton's specs

 

[Zap Brannigan]

Originally posted by: f95toli
There are several experiments running where people are trying to detect gravitons, so far no one has succeded but it is definitly a very active field.

That atom smasher they are building in Italy may detect the elusive Graviton. It (new improved massive space age atom smasher) will be able to do far more work than anything seen yet.

 

[Googer]

Originally posted by: Zap Brannigan

Originally posted by: f95toli
There are several experiments running where people are trying to detect gravitons, so far no one has succeded but it is definitly a very active field.

That atom smasher they are building in Italy may detect the elusive Graviton. It (new improved massive space age atom smasher) will be able to do far more work than anything seen yet.

Great just what we need, perfetly good atoms being smashed.... don't these scientists have anything better to do with their time like go to demilition derbies or monster truck rallies?

 

[aceofspades230]

LOL thats one way of explaining it. But I'm sure the project scientists know far more than any non-involved person, and with each generation of accelerators new and more exotic particles are found.

 

[artikk]

There are no real fundamental or strong theories on what cause/makes gravity. Humans can only imagine/theorize/make up stuff to explain how gravity works

 

[sao123]

M-brane theory is the best start at explaining it so far.
The graviton existance is so far consistent with M-brane theory.

 

[silverpig]

Originally posted by: sao123
M-brane theory is the best start at explaining it so far.
The graviton existance is so far consistent with M-brane theory.

As in neither has any foundation in the physical world yet...

 

[imported_jb]

the fact that something exists isn't enough of a reason for it to have gravity?
i'm sure with particle accelerators, they are _always_ gonna smash to small things together and find smaller things.
what if in search of gravitrons and what not, they snap something?! it could unmake the universe!! do you think there is enough energy in the universe to stop this from happening? there's probably a limit on what a blackhole will reduce stuff to, so particle accellerators may be wicked unnatural. no?

 

[SagaLore]

I think gravitons are just a made up construct that helps quantum physicist make better calculations/predictions. Einstein's relativity seems to make more sense - that gravity is actually a warping of space that interacts with us via the dimension of time. When you start playing with gravitons then you turn it into a particle and you're back to the problem of what medium it travels in, so in the end you have to perceive "space" as an actual fabric, that some people call ether and some people call spacetime.

 

[SagaLore]

Originally posted by: jb
the fact that something exists isn't enough of a reason for it to have gravity?
i'm sure with particle accelerators, they are _always_ gonna smash to small things together and find smaller things.
what if in search of gravitrons and what not, they snap something?! it could unmake the universe!! do you think there is enough energy in the universe to stop this from happening? there's probably a limit on what a blackhole will reduce stuff to, so particle accellerators may be wicked unnatural. no?

Actually I think particle accelerators don't even come close to the natural forces at work within a star. Stars = massive gravity + massive force + massive energy, way more than any contraption we can come up with.

 

[Zap Brannigan]

Originally posted by: Googer

Originally posted by: Zap Brannigan

Originally posted by: f95toli
There are several experiments running where people are trying to detect gravitons, so far no one has succeded but it is definitly a very active field.

That atom smasher they are building in Italy may detect the elusive Graviton. It (new improved massive space age atom smasher) will be able to do far more work than anything seen yet.

Great just what we need, perfetly good atoms being smashed.... don't these scientists have anything better to do with their time like go to demilition derbies or monster truck rallies?

Well you could always join the People for Ethical Treatment of Atoms club you damn hippie! LOL

 

[kotss]

Originally posted by: SagaLore
I think gravitons are just a made up construct that helps quantum physicist make better calculations/predictions. Einstein's relativity seems to make more sense - that gravity is actually a warping of space that interacts with us via the dimension of time. When you start playing with gravitons then you turn it into a particle and you're back to the problem of what medium it travels in, so in the end you have to perceive "space" as an actual fabric, that some people call ether and some people call spacetime.

Actually yes they are made up at this point in time just as are atoms, electrons, protons and neutrons and
all of the other elementary particles. No one has ever seen any of these. But the theories that explain
their properties and the empirical data dervied from experiments goes a long way towards making them
damn good explanations of what they make look like.

As the three other forces that have been considered fundamental to the universe have mediating particles
it is only natural to try to explain that gravity would have a mediating particle. For ElectroMagnetism it is
the photon, for the Weak Nuclear Force it is Massive Vector Bosons and for the Strong Nuclear Force it
is the Gluon. By making a particle/wave responsible for the force of gravity it makes it consistent with
the other forces. The very nature of how gravity works would also lead to the conclusion of a massless
particle otherwise the mediating particle would be affected by itself. The medium it travels in is the same
as any of the other force mediating particles. The idea of the ether has been laid to rest for many years
and no serious physicist uses that for explanations anymore.

 

[Jeff7]

Originally posted by: SagaLore

Originally posted by: jb
the fact that something exists isn't enough of a reason for it to have gravity?
i'm sure with particle accelerators, they are _always_ gonna smash to small things together and find smaller things.
what if in search of gravitrons and what not, they snap something?! it could unmake the universe!! do you think there is enough energy in the universe to stop this from happening? there's probably a limit on what a blackhole will reduce stuff to, so particle accellerators may be wicked unnatural. no?

Actually I think particle accelerators don't even come close to the natural forces at work within a star. Stars = massive gravity + massive force + massive energy, way more than any contraption we can come up with.

I seem to recall some article saying that within a decade it may be possible to create tiny black holes inside particle accelerators. However, they are predicted to last only a tiny fraction of a second before they vaporize, thanks to the emission of Hawking Radiation.

 

[Zap Brannigan]

How could they make a black hole inside of a particle accelrator? That makes no sense to me.

A black hole is theorized to be an extremely compressed star.

 

[Cattlegod]

Originally posted by: Zap Brannigan
How could they make a black hole inside of a particle accelrator? That makes no sense to me.

A black hole is theorized to be an extremely compressed star.

actually a black hole is any volume that has enough gravity where light cannot escape.

 

[MrDudeMan]

Originally posted by: Cattlegod

Originally posted by: Zap Brannigan
How could they make a black hole inside of a particle accelrator? That makes no sense to me.

A black hole is theorized to be an extremely compressed star.

actually a black hole is any volume that has enough gravity where light cannot escape.

winnAr. black holes are usually only discussed when talking about the collapse of a large star, but that doesnt limit them to being formed only by stars.

 

[cquark]

Originally posted by: SagaLore

Originally posted by: jb
the fact that something exists isn't enough of a reason for it to have gravity?
i'm sure with particle accelerators, they are _always_ gonna smash to small things together and find smaller things.
what if in search of gravitrons and what not, they snap something?! it could unmake the universe!! do you think there is enough energy in the universe to stop this from happening? there's probably a limit on what a blackhole will reduce stuff to, so particle accellerators may be wicked unnatural. no?

Actually I think particle accelerators don't even come close to the natural forces at work within a star. Stars = massive gravity + massive force + massive energy, way more than any contraption we can come up with.

No, the environment inside a particle accelerator is far more extreme (much higher energies, temperatures, and forces) than the inside of the Sun or even than the inside of a neutron star. The energy density inside a particle collision at Fermilab is around 10,000 times that of two hydrogen nuclei colliding inside the Sun's core (which occurs at temperatures of about 10 million Kelvin.) The surface of the Sun is fairly cool, a bit less than the 6000 Kelvin temperature of a greenhouse metal halide bulb.

 

[plastick]

Originally posted by: Anubis08
Just as the title says

Think of it this way.. you know how when there is a vacuume in a popbottle and a balloon can get sucked into it if you put it over the top? Well imagine that inverted, and imagine its the universe. And since there are no sides of the universe (theoretically), matter stretches the Ether of the universe from all possible angles and causes a pull.