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Gravitational waves from black holes observed on Earth.

Archer

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http://www.bbc.com/news/science-env...ng&ns_source=twitter&ns_linkname=news_central

Scientists are claiming a stunning discovery in their quest to fully understand gravity.
They have observed the warping of space-time generated by the collision of two black holes more than a billion light-years from Earth.
The international team says the first detection of these gravitational waves will usher in a new era for astronomy.
It is the culmination of decades of searching and could ultimately offer a window on the Big Bang.
The research, by the LIGO Collaboration, has been published today in the journal Physical Review Letters.
The collaboration operates a number of labs around the world that fire lasers through long tunnels, trying to sense ripples in the fabric of space-time.
Gravitational waves: A triumph for big science
Expected signals are extremely subtle, and disturb the machines, known as interferometers, by just fractions of the width of an atom.
But the black hole merger was picked up by two widely separated LIGO facilities in the US.
The merger radiated three times the mass of the sun in pure gravitational energy.
"We have detected gravitational waves," Prof David Reitze, executive director of the LIGO project, told journalists at a news conference in Washington DC.
"It's the first time the Universe has spoken to us through gravitational waves. Up until now, we've been deaf."

...
Holy shit!! I didn't think this would happen in my lifetime. This is the stuff from science fiction novels.
 

PaulMaster

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I've always thought of it like a hill. Objects rolling down a hill - towards each other instead of down a hill.

Bodies distort space itself which creates these "hills". When other bodies - even light - move into this distorted space they "fall" or get "funneled" towards the center of the distortion, which is the other body.

So should we still be calling it Space? Space is empty nothingness, yes? Space is not nothing.
 

Yellow

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I have nothing to add except "that's fucking awesome". Thank you for posting this, OP.
 

Grayman

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I've always thought of it like a hill. Objects rolling down a hill - towards each other instead of down a hill.

Bodies distort space itself which creates these "hills". When other bodies - even light - move into this distorted space they "fall" or get "funneled" towards the center of the distortion, which is the other body.

So should we still be calling it Space? Space is empty nothingness, yes? Space is not nothing.

I like to have a lot of space between me and other people in crowded rooms but all that air keeps getting in the way.
 

Haim

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"Being able to detect gravitational waves enables astronomers finally to probe what they call "dark" Universe"
What? how?0.0
 

Grayman

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Grayman

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"Being able to detect gravitational waves enables astronomers finally to probe what they call "dark" Universe"
What? how?0.0

'dark' because light is not received from it. They theorized its existence because of the gravitational effect it has on its surrounding area. If we can directly measure gravity we no longer need to rely on observing its affects indirectly because we ourselves will be able to measure those affects on our instruments and interpret them more directly.
 

Brontosaurie

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I too proclaim acquaintance with space and its promising existential frontiers, and am pleased by this very baffling discovery.

Let's celebrate.
 

Haim

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'dark' because light is not received from it. They theorized its existence because of the gravitational effect it has on its surrounding area. If we can directly measure gravity we no longer need to rely on observing its affects indirectly because we ourselves will be able to measure those affects on our instruments and interpret them more directly.
Thanks(note:I do have some idea of what is dark matter)
But I am not sure that we will be able to detect it that way, dark matter does not have much interaction that can produce significant gravity waves(as much as I know)
 

Pyropyro

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so... gravitational waves are cosmic dubstep?
 

Grayman

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Thanks(note:I do have some idea of what is dark matter)
But I am not sure that we will be able to detect it that way, dark matter does not have much interaction that can produce significant gravity waves(as much as I know)

Now that they know that it does behave like waves they can now work on making more sensitive instruments. ...But I guess I feel the same way as you do. I don't see these gravity waves as being strong enough to be measurable from such a distance by any equipment anytime soon, if ever. The thing is that 50 years ago I am sure no one ever imagined it possible for smart phones to exist either.
 

Happy

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Fuckin Rad!
 

Happy

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yeahsciencebitch.PNG
 

Architect

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Litterally made me cry. I was a mess all day yesterday, I did GR as an undergrad and have been watching LIGO for decades.

Higgs was good but we all expected to find it. Gravitational waves are not, even Einstein wasn't really sure they existed. Space time continuum - literally. Not just an apt description. I'm out of touch though and didn't know what the modeling expected to see, but to have it actually turn out to be an ordinary chirp in the audio frequency range is just ... unbelievable. That never happens in science. Anyhow this is probably the biggest physics discovery we'll have for the foreseeable future.

At least they will finally be able to 'disprove' that gravity affects time. Gravity makes a better reference for time than light anyways.

Don't know where that comes from. Time slows down in a gravitational field. GPS satellites have to take this into account.
 

PaulMaster

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Don't know where that comes from. Time slows down in a gravitational field. GPS satellites have to take this into account.

Do you know if space behaves equally "slowly" in a gravitational field? I know it becomes distorted and bent, but would it be accurate in any way to describe these distortions as "slow"?

This is an undeveloped thought, please pardon the lack of clarity.
 

Grayman

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Don't know where that comes from. Time slows down in a gravitational field. GPS satellites have to take this into account.

Units of measure are meant to be constant they were created that way on purpose. They are essentially references in which to make comparisons between two other points. We use light a reference to measure time and since light is affected by gravity our reference of time changes. It is like using a rubber ruler to take measurements and then saying length itself is expanding when it is cold and contracting when it is hot. It is like saying that when a year passes faster 3 billion years from now when the earth rotates faster around the sun that time itself has sped up. Time is constant, it is only your point of reference that changes.

Light made a good reference of time because it travels at a constant speed. So by knowing distance you can always come up with time. Then you can compare the distance ligth travels to other actions that take place in order to come up with a measure of time. This is your ruler of time. This time ruler expands and contracts with gravity like your rubber ruler does with heat.

Time is not changing, length is not changing, you just need a better ruler.

Time as a measurement always moves forward. Even if you suddenly shifted the universe to reverse all actions and reactions so that the earth spun the opposite direction and then people walked backwards and the chemical reaction of all atoms suddenly reversed to previous conditions, time itself is still moving forward. Everything else is just in reverse action. When it is all done and you stopped this reverse effect you are in the future of a replica past.

Atomic clocks use lasers, light, photons, and are affected by gravity. Time itself is not affected by gravity. The clock is. It is your rubber ruler.
 

Architect

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Do you know if space behaves equally "slowly" in a gravitational field? I know it becomes distorted and bent, but would it be accurate in any way to describe these distortions as "slow"?

Rulers (space) contract in an inertial frame (one going faster than you or accelerating, which is the same as being in a gravitational field) and time lengthens - slows down. Space-time (3+1 dimensions) distorts, just like any non-isotropic metric (e.g. jello being squashed behaves similarly and requires tensors to describe too).

That is the word slow makes no sense when talking about space.

Time is not changing, length is not changing, you just need a better ruler ...

Have no idea what you're saying, but sorry it's not physics. In laymens terms it's this simple: the GPS in your phone has to compensate for the fact that you're in a gravitational field, because relative to the GPS satellite time is moving slower down here in a measurable (and important) amount. These things wouldn't work well without the calibration.

It's a real effect too, calibrate your phone and the satellite, then turn off the correction for a year and fly it up to ISS. Guess what? Once brought together to the same region of space time (same inertial frame) the two will have an offset.

Muons are created in the upper atmosphere from solar wind collisions and have a short half life, we wouldn't see them on the surface if it wasn't for relativistic effects. Shit, some chemists just found that some of the far out elements of the periodic table aren't working correctly unless you correct for relativity, because the valence electrons are shooting around at an appreciable 'c'.
 

Grayman

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Rulers (space) contract in an inertial frame (one going faster than you or accelerating, which is the same as being in a gravitational field) and time lengthens - slows down. Space-time (3+1 dimensions) distorts, just like any non-isotropic metric (e.g. jello being squashed behaves similarly and requires tensors to describe too).

That is the word slow makes no sense when talking about space.



Have no idea what you're saying, but sorry it's not physics. In laymens terms it's this simple: the GPS in your phone has to compensate for the fact that you're in a gravitational field, because relative to the GPS satellite time is moving slower down here in a measurable (and important) amount. These things wouldn't work well without the calibration.

My fridge slows the decay of my food. Also aging can nearly be stopped by freezing a human being in near sub zero. *Time must be altered by temperature*

I have a question. Temperature slows down or stops chemical reactions for certain. Does gravity slow down chemical reactions and what testing has been done to show this? (Example: constant pressure temperature and convection in a ship in outerspace vs a lab on earth with the same pressure temperature and convection)
 

Archer

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Grayman,
The equation for gravitational time dilation:
droppedImage.png
 

Ex-User (9086)

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I have a question. Temperature slows down or stops chemical reactions for certain. Does gravity slow down chemical reactions and what testing has been done to show this? (Example: constant pressure temperature and convection in a ship in outerspace vs a lab on earth with the same pressure temperature and convection)
Convection doesn't occur in microgravity. To simulate it there would have to be a constant centrifugal force applied to the object. Centrifugal force is very different from gravity because the force changes with the distance from the center of rotation, while it stays constant for natural gravity (large scale vs small scale). The experiment wouldn't be equivalent as the conditions are too different.
 

Sinny91

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http://www.youtube.com/watch?v=s06_jRK939I

http://www.youtube.com/watch?v=P0E5KDoSRHU

Quoting Cosmos @ Pegasus Research Consortium
I don't think a lot of us find this so surprising. What this does is validate the linkage of space, time and gravity and proves that space and time can be modified with GRAVITY. (as long as you know what gravity REALLY is) I think this has been a common understanding with some on this forum for a long time. What I don't agree with is the theory that space time is like a rubber sheet that is distorted by mass, causing gravity. Tesla told us the truth with his Dynamic Theory of Gravity a long time ago and Ben Rich told us that "the equations were wrong" meaning the truncation of Maxwell's equations eliminating the ETHER. So, interesting news, but no surprise and don't be confused to think this validates the rubber sheet/space time analogy. Space time is a super fluid.

Just look at the world around you and then the universe above. Fluid dynamics all around in profusion. Kind of hard to miss. As above so below. Everything IS connected in the same primary medium and all matter and energy are distortions, movement, kinetic energy in this medium, from subatomic to cosmic. Even your very thoughts.

http://www.youtube.com/watch?v=YMsbqONCvxQ

Perhaps adds a whole new perspective to 'Gravitational Lenses':
https://en.wikipedia.org/wiki/Gravitational_lens
Cosmo
A couple more thoughts come to mind.

It would be interesting to check for seismic and solar activities at the time the G-wave hit the sun and earth.

Also, is anyone asking how a G-wave from so far away and so long ago can continue to travel through space to be measured all these light years later? If it is distorting space time, how can it propagate with no resistance, at the speed of light through those vase distances in space time?

It could be that space time(ETHER) is a super fluid and provides no resistance.

Space time and gravity ARE the same things, just in different states. Gravity is just movement of space time. So, to manipulate gravity, you must move space time, which is really just the ETHER as described by Tesla. We see that happening in the universe all around us in black holes, the uni-polar inductor, modifying space/time/gravity, demonstrating the linkage and the way.

If Zilong Li and Cosimo Bambi of the Fudan University in Shanghai are correct, what we thought was a massive blackhole in the center of our galaxy could be a wormhole that would allow instantaneous travel between two points in space and time. In fact, it may be the gateway to a different universe.

They even go beyond that—their paper says that every supermassive black hole candidate in other galaxies can actually be wormholes created in the early Universe.

The supermassive black hole candidates at the center of every normal galaxy might be wormholes created in the early Universe and connecting either two different regions of our Universe or two different universes in a Multiverse model.
Their theory may sound fantastic, but it's not a completely crazy idea. Wormholes are allowed under the Theory of General Relativity. In fact, while they have never been observed, this hypothetical topological phenomenon of space-time was first postulated by Albert Einstein himself and his friend Nathan Rosen.

But while the equations indicate that they may exist—and, so far, General Relativity has been accurate in its predictions—we need to actually detect one to prove they exist.

Li and Bambi think this will be possible in a couple of years, when a new instrument called Gravity becomes operative at the Very Large Telescope Interferometer, the European Space Observatory located on the top of Cerro Paranal, 74.5 miles (120 kilometers) south of Antofagasta, Chile.

What we know is what is possible under Einstein's general relativity. The theoretical work says that

1) Wormholes can exist.

2) Wormholes would allow matter to travel faster than light (FTL) because, while objects passing through a wormhole would still move at sub-light speeds locally (therefore obeying Einstein's first commandment: Thou shall not travel faster than light!) they will go from one point of the universe to the other much faster than a beam of light traveling outside the wormhole, through regular space.

3) Wormholes would allow to travel in time. This is way too complex to explain here, but you can make your head explode at any time by reading this.

4) Wormholes may connect different universes, which ties with the idea of many parallel universes derived from quantum mechanics. This avoids any time paradox because,according to some recent theories, "a particle returning form the future [through a wormhole] does not return to its universe of origin but to a parallel universe." I know, Marty, my mind is collapsing into a tiny black hole right now.

This all means that we really don't have a clue about what may be happening yet when going through a wormhole. We just have a lot of equations that seem to work and, according to Zilong Li and Cosimo Bambi, the possibility of testing the existence of wormholes in the very near future using a new scientific instrument.
http://sploid.gizmodo.com/scientists-think-there-may-be-wormhole-in-the-center-of-1582831794

Ben Rich:
https://en.wikipedia.org/wiki/Ben_Rich

When Ben Rich was asked how UFO propulsion worked, he said, “Let me ask you. How does ESP work?” The questioner responded with, “All points in time and space are connected?” Rich then said, “That’s how it works!”

“We already have the means to travel among the stars, but these technologies are locked up in black projects, and it would take an act of God to ever get them out to benefit humanity. Anything you can imagine, we already know how to do.”

“We now have the technology to take ET home. No, it won’t take someone’s lifetime to do it. There is an error in the equations. We know what it is. We now have the capability to travel to the stars. First, you have to understand that we will not get to the stars using chemical propulsion. Second, we have to devise a new propulsion technology. What we have to do is find out where Einstein went wrong.”

Cosmo
One thing to keep in mind when we are talking about hyperdimensional manifolds and string theory is that the extra dimensions they describe are at the subatomic scale. Where as a black hole would produce a dimensional extension on the cosmic scale, so not a local extra dimension, but another volume of space time, another universe.

I do think that each type of subatomic spin is represented by another subatomic spacial dimension and that the various types of spin are determined by the unique geometry of each of those subatomic dimensions. I like to think that is just the way the creator does things.


Black holes are a passage to another universe, says Stephen Hawking

Humans could escape from black holes, rather than getting stuck in them, according to a new theory proposed by Stephen Hawking.

Unfortunate space travellers won’t be able to return to their own universe, according to Hawking. But they will be able to escape somewhere else, he has proposed at a conference in Stockholm.
http://www.independent.co.uk/news/s...r-universe-says-stephen-hawking-10471397.html

Scientists think there may be a wormhole in the center of our galaxy
http://sploid.gizmodo.com/scientists-think-there-may-be-wormhole-in-the-center-of-1582831794

 

Grayman

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Convection doesn't occur in microgravity. To simulate it there would have to be a constant centrifugal force applied to the object. Centrifugal force is very different from gravity because the force changes with the distance from the center of rotation, while it stays constant for natural gravity (large scale vs small scale). The experiment wouldn't be equivalent as the conditions are too different.

I was thinking of forced convection within a closed container that has equal temperatures throughout all sides of the container so as not to be susceptible to natural convection.
 
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