Test of general relativity could potentially generate new gravitational models

May 29, 2017, W. M. Keck Observatory
The orbits of two stars, S0-2 and S0-38 located near the Milky Way’s supermassive black hole will be used to test Einstein’s theory of General Relativity and potentially generate new gravitational models. Credit: S. Sakai/A.Ghez/W. M. Keck Observatory/ UCLA Galactic Center Group

A UCLA-led team has discovered a new way of probing the hypothetical fifth force of nature using two decades of observations at W. M. Keck Observatory, the world's most scientifically productive ground-based telescope.

There are four known forces in the universe: electromagnetic force, strong nuclear force, weak nuclear force, and . Physicists know how to make the first three work together, but gravity is the odd one out. For decades, there have been theories that a fifth force ties gravity to the others, but no one has been able to prove it thus far.

"This is really exciting. It's taken us 20 years to get here, but now our work on studying at the center of our galaxy is opening up a new method of looking at how gravity works," said Andrea Ghez, Director of the UCLA Galactic Center Group and co-author of the study.

The research is published in the current issue of Physical Review Letters.

Ghez and her co-workers analyzed extremely sharp images of the center of our galaxy taken with Keck Observatory's adaptive optics (AO). Ghez used this cutting-edge system to track the orbits of stars near the supermassive black hole located at the center of the Milky Way. Their stellar path, driven by gravity created from the supermassive black hole, could give clues to the fifth force.

"By watching the stars move over 20 years using very precise measurements taken from Keck Observatory data, you can see and put constraints on how gravity works. If gravitation is driven by something other than Einstein's of General Relativity, you'll see small variations in the orbital paths of the stars," said Ghez.

This is the first time the fifth force theory has been tested in a strong gravitational field such as the one created by the supermassive black hole at the center of the Milky Way. Historically, measurements of our solar system's gravity created by our sun have been used to try and detect the fifth , but that has proven difficult because its gravitational field is relatively weak.

"It's exciting that we can do this because we can ask a very fundamental question – how does work?" said Ghez. "Einstein's theory describes it beautifully well, but there's lots of evidence showing the theory has holes. The mere existence of tells us that our current theories of how the universe works are inadequate to explain what a black hole is."

Ghez and her team, including lead author Aurelien Hees and co-author Tuan Do, both of UCLA, are looking forward to summer of 2018. That is when the star S0-2 will be at its closest distance to our galaxy's supermassive black hole. This will allow the team to witness the star being pulled at maximum gravitational strength – a point where any deviations to Einstein's theory is expected to be the greatest.

Explore further: Astronomers solve puzzle about bizarre object at the center of our galaxy

More information: A. Hees et al. Testing General Relativity with Stellar Orbits around the Supermassive Black Hole in Our Galactic Center, Physical Review Letters (2017). DOI: 10.1103/PhysRevLett.118.211101

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1.3 / 5 (9) May 29, 2017
Even in this article the researchers are blatantly honest that they do NOT Know exactly how Gravitation works nor do they know exactly what a 'black hole' is. For those of you who have been expounding on the EU folks as being indescribably wrong this shows that even the top researchers do NOT KNOW For Sure what Gravity is, nor what Black Holes are, no matter how loudly the BB Cosmologists rant and rave, there is Not enough data for them to be sure.

So, saying that the EU view of Cosmology is wrong is a matter of spaking before all facts are known. Presently the Big Money is riding on what the Govt says is allowable, meaning that anything that might show that free energy is real is covered up by those with their money in the energy market (Oil and gas magnates). Does not take a brain surgeon to see this. The loud, rowdy and rude naysayers tend to be paid trolls for the Mainstream Science Groups and Energy Co's.
1.6 / 5 (7) May 29, 2017
The mere existence of supermassive black holes tells us that our current theories of how the universe works are inadequate to explain what a black hole is."
But of course, Einstein never contemplated GR could be used to prove the existence of BHs, so he wrote the following paper to buttress that contention:

"On Stationary Systems with Spherical Symmetry consisting of many Gravitating Masses"

"The essential result of this investigation is a clear understanding as to why the "Schwarzschild singularities" do not exist in physical reality. Although the theory given here treats only clusters whose particles move along circular paths it does not seem to be subject to reasonable doubt that most general cases will have analogous results. The "Schwarzschild singularity" does not appear for the reason that matter cannot be concentrated arbitrarily. And this is due to the fact that otherwise the constituting particles would reach the velocity of light."

1.4 / 5 (9) May 29, 2017
Not #Steelwolf 's fault, but those 'power structures' do not have absolute control of all of our world. There are other power centers who care not a bit for our monopolists that exploit us. Any attempt to truly hide something like free energy is already exposed to intelligence staffers of, say Russia or China. If there IS a path to so called free energy, then it is already being researched in these and maybe other centers for militarily significant new physics and especially their applications. This would likely take the form of craft that can seemingly violate not only gravity but also inertia, as witnessed numerous times by unimpeachable sources describing so called 'UFO's. Our competitors WILL develop this tech. Suppression of this fifth force tech from so called 'free world' use IS treason against all the world's 'free' peoples, and needs to be prosecuted as such. Few real excuses for not using the death penalty exist, but THIS would be a valid use.. AFTER trial.
3.7 / 5 (6) May 29, 2017
I think you guys are part of the conspiracy to spread false conspiracy theories. Thereby trying to confuse everybody so the masses don't see the real truth. :-)
1.1 / 5 (15) May 29, 2017
It has been a known fact for more than one year that Einstein's relativity is wrong as it has been disproved both logically and experimentally (see "Challenge to the special theory of relativity", March 1, 2016 on Physics Essays and a press release "Special Theory of Relativity Has Been Disproved Theoretically" on Eurekalert website: https://www.eurek...16.php).

The most obvious and indisputable experimental evidence, which everybody with basic knowledge of special relativity should immediately understand: is the existence of the absolute time shown by the universally synchronized clocks on the GPS satellites which move at high velocities relative to each other while special relativity claims that time is relative (i.e. the time on each reference frame is different) and can never be synchronized on clocks moving with relative velocities.
May 29, 2017
This comment has been removed by a moderator.
1.5 / 5 (8) May 29, 2017
"On Stationary Systems with Spherical Symmetry consisting of many Gravitating Masses"

Here is the link for Einsteins above paper in which he rejects the possibility of the formation of BHs:


In my above post, I copied Einsteins CONCLUSIONS directly from that peer reviewed paper, because as we all know, PEER REVIEW papers are the epitome of importance to certain ones who frequently post here.
1.7 / 5 (6) May 29, 2017
What has been known for a LONG time is these are all theories not facts. We don't know what over 95% of the universe is. How can think we know facts about the big picture?
1.8 / 5 (10) May 29, 2017
They have been collecting data for 20 years and are just now "opening up a new method of looking at how gravity works". Huh? I would thought they would have been doing this along or why collect the data. It sounds like GR has already lost as they are looking at other alternative theories.
1.2 / 5 (6) May 29, 2017
There are no 'Facts ' in science, only 'Best theories'.
May 29, 2017
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3 / 5 (2) May 29, 2017
There are no 'Facts ' in science, only 'Best theories'.

I would disagree only because NO is so final.
Eventually we will know facts.
And I think we know some facts about science now but they have to be carefully qualified and seldom(wanted to use NEVER but knew better) generalized.
1 / 5 (3) May 29, 2017
xinhangshen As Einstein clearly defined time "as slices" and his comments privately indicated a greater understanding of what it was, than what he was constrained to say in his theory, given the prevailing view of his era. These comments indicate you are not reading the theory in it's entirety. An understanding of the maths relating to time dilation indicates that what he is measuring is not time.
Da Schneib
4.6 / 5 (9) May 29, 2017
There are no 'Facts ' in science, only 'Best theories'.

Actually, that's incorrect. There are observations, and there are experiments. Both produce facts. And the facts must support a hypothesis for it to become a theory. Science is firmly grounded in reality.
1.6 / 5 (7) May 29, 2017
Science is firmly grounded in reality.

........yeah, like: "On Stationary Systems with Spherical Symmetry consisting of many Gravitating Masses"


Some great anti-Black Hole science here authored by Einstein.
Da Schneib
3.5 / 5 (13) May 29, 2017
@Lenni doesn't understand the difference between black holes and singularities.

That's because failed refrigerator techs can't do math.
2.3 / 5 (3) May 30, 2017
Anti-intelligensia hooliganism at its worst here. All '1's! Anton Checkhov's ghost must be dancing on the Kremlin wall about the dissolute west.
5 / 5 (1) May 30, 2017
Anton Checkhov's ghost

Ah, a man that believes in ghosts, while talking about other people's intelligence or lack of. :-)
Or perhaps he was just trying to impress us with an unfortunate choice of words, thinking we would be wowed.
5 / 5 (1) May 30, 2017
Well swordsman if what you wrote is true you just outed yourself as "Weldon Vlasak". And if that is true why do you hide behind a sudo name like a lot of other cowards here?
Captain Stumpy
5 / 5 (4) May 30, 2017
And if that is true why do you hide behind a sudo name like a lot of other cowards here?
wait.... what?

you mean rderkis is on your birth certificate as your name?

May 31, 2017
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5 / 5 (2) May 31, 2017
i took the mixture

1 / 5 (2) May 31, 2017
Einstein's GR correlates with gravity, but does not causally explain it. This is both amazing for how well it correlates, but understandable for the antiquity of his paradigm. Ironically, a previously popular paradigm for gravity that was destroyed before GR, can be corrected for its fatal errors: push/shadow gravity. I have done this for the 21st century. I have also deductively looked into the sub-Planck dimensions to discover the fundamental energy/matter particles. Please read this recently written essay to see how it all fits together: astronomy(hyphen)links(dot)net(slash)LightSpeed(dot)pdf
Jun 05, 2017
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Jun 05, 2017
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Jun 05, 2017
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not rated yet Jun 05, 2017
Since gravity is not really anergy but a warping of the dimensions of the universe that we are aware of including time.
They don't really understand magnetism at its most fundamental level. Oh, they can create it, measure it and they can see(?) the magnetic lines of force as it influences other matter.

I always wondered, if just like gravity it is not a energy, but a warping of a dimension we don't know about yet.
Someone might have presented this theory but I can't find it. Probably because it is ridiculous.
Jun 06, 2017
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not rated yet Jun 06, 2017
It can be explained, if one knows how a matter and disappear.

Lost in translation


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