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For the First Time, We Have a Detailed Model of the Universe
Atlantic ^ | May 8 2014, | Megan Garber

Posted on 05/11/2014 12:12:47 PM PDT by lbryce

It is, if you except the powers of human memory, the closest thing we have to a time machine.

Scientists have created the first realistic model of the universe, capable of recreating 13 billion years of cosmic evolution. The simulation is called “Illustris,” and it renders the universe as a cube (350 million light-years on each side) with, its creators say, unprecedented resolution: The virtual universe uses 12 billion 3-D “pixels,” or resolution elements, to create its rendering. And that rendering includes both normal matter and dark matter.

The rendering, importantly, also includes elliptical and spiral galaxies—bodies that, because of numerical inaccuracies and incomplete physical models, we'd been unable to see with such detail in previous simulations of the universe. It also does a better job than previous renderings of modeling the feedback from star formation, supernova explosions, and supermassive black holes.

YouTube:Illustris Simulation: Most detailed simulation of our Universe

(Excerpt) Read more at theatlantic.com ...


TOPICS: News/Current Events
KEYWORDS: cosmology; science; space; universe
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It would be a much more appreciated as a tool in which to actually navigate the vast, infinite oceans of cosmic time/space.
1 posted on 05/11/2014 12:12:47 PM PDT by lbryce
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To: SunkenCiv

Warp Drive Map of the Universe Ping


2 posted on 05/11/2014 12:14:04 PM PDT by lbryce (Barack Hussein Obama:The Worst is Yet to Come)
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To: lbryce

What is “Dark Matter/Energy” ?

Why is it called “Dark” ?

Can they create this model without it ?


3 posted on 05/11/2014 12:19:02 PM PDT by Zeneta (Thoughts in time and out of season.)
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To: lbryce
"We Have a Detailed Model of the Universe"

No we don't.

4 posted on 05/11/2014 12:20:46 PM PDT by Dalberg-Acton
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To: lbryce

Yes, but can you get it folded back up after using it.


5 posted on 05/11/2014 12:20:48 PM PDT by driftdiver (I could eat it raw, but why do that when I have a fire.)
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To: lbryce; SunkenCiv

ping


6 posted on 05/11/2014 12:24:23 PM PDT by null and void ( They don't think think they are above the law. They think they are the law.)
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To: lbryce

Nicely done illusion. Just like the illusion we perceive.


7 posted on 05/11/2014 12:24:58 PM PDT by mosaicwolf (Strength and Honor)
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To: Zeneta

Tis ‘dark’ because we cannot observei it.


8 posted on 05/11/2014 12:34:16 PM PDT by Pikachu_Dad (Impeach Sen Quinn)
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To: Zeneta
Dark Matter gets that name because its interactions appear to be limited to gravity, and so far, no lab experiment has observed any of this "stuff." The supposed function of dark matter is to explain why galaxies appear to rotate as a unit. Our solar system, in contrast, has slower moving planets in the more distant orbits.

Dark Energy gets that name for a similar reason, no observation of it. It is invoked to explain why the expansion of the universe appears to be accelerating.

9 posted on 05/11/2014 12:35:35 PM PDT by Cboldt
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To: Cboldt

Can they create this model without it ?

BTW, all my questions are rhetorical.


10 posted on 05/11/2014 12:46:12 PM PDT by Zeneta (Thoughts in time and out of season.)
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To: lbryce
"It would be a much more appreciated as a tool in which to actually navigate the vast, infinite oceans of cosmic time/space. "

Maybe we should figure out how to travel such distance first.

According to Einstein's Relativity models nothing can travel faster than light.

Quantum Physics has show "effect" on one body from another at faster speeds but has not shown the movement of matter/mass any faster.

That I know of, and I know jack.

11 posted on 05/11/2014 12:49:29 PM PDT by Mariner (War Criminal #18)
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To: Zeneta
"What is “Dark Matter/Energy” ?"

They are phrases used to avoid the fact that the standard cosmological models don't conform to the actual data.

12 posted on 05/11/2014 12:49:35 PM PDT by circlecity
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To: Cboldt
"why the expansion of the universe appears to be accelerating"

Yep, we're just one big explosion that hasn't stopped yet. Still in the momentum phase, but can that ever stop in infinite space?

13 posted on 05/11/2014 12:52:34 PM PDT by Mariner (War Criminal #18)
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To: driftdiver
driftdiver @5: "Yes, but can you get it folded back up after using it."

Zymurgy's First Law of Evolving Systems Dynamics: Once you open a can of worms, the only way to recan them is to use a larger can.

14 posted on 05/11/2014 12:54:18 PM PDT by Carl Vehse
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To: Mariner
"Yep, we're just one big explosion that hasn't stopped yet. Still in the momentum phase, but can that ever stop in infinite space?"

Not just momentum, the expansion is accelerating and at an exponential rate

15 posted on 05/11/2014 12:56:25 PM PDT by circlecity
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To: JDoutrider

Bookmark


16 posted on 05/11/2014 12:56:31 PM PDT by JDoutrider
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To: Zeneta
The model doesn't work without those fudge factors, at least the dark matter one.

There are other ways to get to a similar result. I'm poking around in www.ipod.org.uk/reality/, web pages of Andrew Thomas (author of a series of books titled "Hidden in Plain Sight"), recalling that he created a model that supposedly does similar, by making a modification to the law of gravity. The modification only works on objects that are massive compared with their volume (black holes; galaxies).

I can't find it in a google search, would have to find the reference in the book - anyway, Dr. Thomas posits no big bang, but a sort of "big pushout," and that everything strives for a surface area commensurate with its mass. For a black hole, that area is the event horizon.

17 posted on 05/11/2014 1:05:00 PM PDT by Cboldt
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To: lbryce; All
Thank you for referencing that article lbryce. Please bear in mind that the following critique is directed at the article and not at you.

I like science and am intrigued with the information presented by this thread. But my basic reservation about the referenced computer model of the universe is the following. Since computer models don't agree on things like climate predictions, I'd be careful about putting too much faith into the computerized model of the universe.

FR: Climate modeling EPIC FAIL – Spencer: ‘the day of reckoning has arrived’

As a side note to this thread, please consider the following. Political activists are successfully exploiting the tendency of us humans to unquestioningly accept anything that computers are programmed (ahem) to tell us as the gospel truth.

18 posted on 05/11/2014 1:07:20 PM PDT by Amendment10
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To: Mariner

The prevailing physics says space isn’t infinite. That concept is difficult to take in, because we are biased to think of a big bang as happening in space; and to think that space (and time) exist independently of the universe.


19 posted on 05/11/2014 1:08:36 PM PDT by Cboldt
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To: Cboldt

Thanks for the links.

An honest question;

Can the Universe exist without expansion ?

I’m not prepared to support a “Steady State” model, however there was recently some data that may call into question the expansion model.


20 posted on 05/11/2014 1:10:13 PM PDT by Zeneta (Thoughts in time and out of season.)
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To: lbryce

This is wonderful news. Now we can find all those missing socks.


21 posted on 05/11/2014 1:13:21 PM PDT by UCANSEE2 (Lost my tagline on Flight MH370. Sorry for the inconvenience.)
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To: Zeneta
NASA:All About Dark Energy, Dark Matter
22 posted on 05/11/2014 1:14:48 PM PDT by lbryce (Barack Hussein Obama:The Worst is Yet to Come)
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To: lbryce
better than this one???

23 posted on 05/11/2014 1:15:21 PM PDT by Chode (Stand UP and Be Counted, or line up and be numbered - *DTOM* -vvv- NO Pity for the LAZY - 86-44)
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To: driftdiver

LOL. Exactly.


24 posted on 05/11/2014 1:15:23 PM PDT by lbryce (Barack Hussein Obama:The Worst is Yet to Come)
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To: Zeneta
I looked up the webpage for the simulator ...
/www.whatisreality.co.uk/universe is the webpage given in the book, "Hidden in Plain Sight II." That redirects to www.ipod.org.uk/reality/universe
25 posted on 05/11/2014 1:20:31 PM PDT by Cboldt
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To: Chode

I like yours better. I can read the little thingys that look like clocks.


26 posted on 05/11/2014 1:20:55 PM PDT by Viking2002
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To: lbryce

There is nothing more boring than everything in the Universe.


27 posted on 05/11/2014 1:20:57 PM PDT by UCANSEE2 (Lost my tagline on Flight MH370. Sorry for the inconvenience.)
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To: Cboldt
Dark energy is a total hack. Nothing in the Standard Model explains it. There's no reason for it. It's just there. There is no force carrier particle. It actually is an intrinsic part of space itself. And it's perfectly balanced.

There's a good layman's discussion of DE on the Science Channel (about 2.5 minutes). Physicists are baffled by it. It seems to even hide when they actively try to search for it.

With DE we avoid the depressing slow heat-death of the universe as the last star dies burns out with nothing left but a dead cinder.

Instead the universe will entire spectacularly (the Big Rip). And you can actually watch it happen 16+ billion years from now if you travel in an FTL spacecraft. You can actually sit in Douglas Adams' Restaurant at the End of the Universe and drink campaign as watch it all happen, faster and faster. The galaxies will fly apart, then the stars, then the planets, then you.

And then we have dark matter. Again the Standard Model doesn't explain it. There's no reason for it. It's just there. Why? Well, it certainly makes the galaxies pretty to look at. Otherwise they would be featureless fuzzballs. And you have to admit the Hubble images are indeed very pretty.

What's even more improbable is that we can actually see those galaxies. The matter density gradient function has to be balanced on a knife edge to see large structures at literally the opposite end of the universe (by all rights the sky ought to be a gray fog or all black). The Hubble Ultra Deep Field is the most improbable image ever taken.

Take all three together: the DE (Big Rip), DM (cool looking structures as cosmological distances), the UDF (we can actually see those structures). See a pattern?

It's all as if something, or someone, likes to show off His handiwork.

28 posted on 05/11/2014 1:21:21 PM PDT by Gideon7
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To: lbryce

An interesting exercise & graphical application, FWIW. (Part of it looked somewhat like a Doctor Who intro ;-)

The video mentioned that “over a hundred thousand lines of code” were used to generate this simulation – I guess it’s easier to model 13 Billion years of cosmic evolution and Trillions of objects (both seen AND unseen) than it is to come up with a functional on-line Gov’t “healthcare” system...


29 posted on 05/11/2014 1:23:03 PM PDT by mikrofon (Space BUMP)
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To: Zeneta
When looking for that gravity/universe simulator, I ran into Dr. Thomas's description of a universe that "just is," and that time (and expansion) are artifacts of our being embedded in the universe.

I tend to think something in the nature of expansion has to exist, to accommodate the travel of light.

30 posted on 05/11/2014 1:23:50 PM PDT by Cboldt
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To: Cboldt
Based on recent observations, scientific models that we exist as part of a much larger realm of innumerable universes aka the Multiverse.

One basis for this is phenomena observed known as the Great Attractor. This is an utterly fascinating revealing MUST READ article

Daily Galaxy:Implications of The Great Attractor

31 posted on 05/11/2014 1:23:54 PM PDT by lbryce (Barack Hussein Obama:The Worst is Yet to Come)
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To: Chode

Where are the mermaids? (Often a fixture on the earliest maps of the known Earth.)


32 posted on 05/11/2014 1:25:45 PM PDT by lbryce (Barack Hussein Obama:The Worst is Yet to Come)
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To: lbryce

Dark Energy.

From NASA.

More is unknown than is known. We know how much dark energy there is because we know how it affects the Universe’s expansion. Other than that, it is a complete mystery. But it is an important mystery. It turns out that roughly 68% of the Universe is dark energy. Dark matter makes up about 27%. The rest - everything on Earth, everything ever observed with all of our instruments, all normal matter - adds up to less than 5% of the Universe. Come to think of it, maybe it shouldn’t be called “normal” matter at all, since it is such a small fraction of the Universe.

This is called “Science” today.

The acceptance of an assumption that is necessary to create a model of an assumption.


33 posted on 05/11/2014 1:28:43 PM PDT by Zeneta (Thoughts in time and out of season.)
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To: lbryce
a couple of points...

1)at the start of the video their model is completely asymmetrical, yet over time symmetry evolves, i don't see how either is possible

2)to create a model they need to calculate the center/origin of the universe, where/in what direction do they estimate it is?

34 posted on 05/11/2014 1:32:06 PM PDT by Chode (Stand UP and Be Counted, or line up and be numbered - *DTOM* -vvv- NO Pity for the LAZY - 86-44)
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To: Chode
Check out the local mermaids on a map that once considered cutting edge cartographical.
35 posted on 05/11/2014 1:32:22 PM PDT by lbryce (Barack Hussein Obama:The Worst is Yet to Come)
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To: lbryce

Kinda flat looking to me, if it’s the universe where
is all the stuff around it?


36 posted on 05/11/2014 1:33:02 PM PDT by tet68 ( " We would not die in that man's company, that fears his fellowship to die with us...." Henry V.)
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To: driftdiver

Honey, directions to the universe?
Don’t be silly, I know it like the back of my hand.
We only have to go back a couple of parsecs and I’ll
know right where we are...


37 posted on 05/11/2014 1:34:46 PM PDT by tet68 ( " We would not die in that man's company, that fears his fellowship to die with us...." Henry V.)
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To: lbryce

That map is way more interesting than the video.
And your point is well made too.


38 posted on 05/11/2014 1:36:47 PM PDT by right way right (America has embraced the suck of Freedumb.)
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To: lbryce
good question, musta got cut from the final release...
39 posted on 05/11/2014 1:41:12 PM PDT by Chode (Stand UP and Be Counted, or line up and be numbered - *DTOM* -vvv- NO Pity for the LAZY - 86-44)
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To: lbryce
there be dragons too...
40 posted on 05/11/2014 1:43:20 PM PDT by Chode (Stand UP and Be Counted, or line up and be numbered - *DTOM* -vvv- NO Pity for the LAZY - 86-44)
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To: Viking2002
yeah, those are the time holes
41 posted on 05/11/2014 1:44:31 PM PDT by Chode (Stand UP and Be Counted, or line up and be numbered - *DTOM* -vvv- NO Pity for the LAZY - 86-44)
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To: circlecity
"What is “Dark Matter/Energy” ?"

They are phrases used to avoid the fact that the standard cosmological models don't conform to the actual data.

Some would call that response cynical. Not me, but some would.

"Those who have the power of accurate observation are often called cynical by those who don't have it."---George Bernard Shaw

By the way, since they don't know what it is, how do they map it? I envision it kind of like those 15th century maps of the new world with dragons and mermaids drawn all over the place.

42 posted on 05/11/2014 1:48:58 PM PDT by seowulf (Cogito cogito, ergo cogito sum. Cogito.---Ambrose Bierce)
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To: Chode

Yeah, cool. Aren’t they where the TARDIS goes?


43 posted on 05/11/2014 1:49:51 PM PDT by Viking2002
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To: mosaicwolf

It may seem you are being overwhelmingly sarcastic but there are those who believe our universe may be a hologram of sorts, an illusion is another hypothesis, an illusion of our very own existence, consciousness, self-awareness has also been suggested. It seems that life, our very selves runs more far afield from reality than we could ever imagine, like some Obama supporter.


44 posted on 05/11/2014 1:51:01 PM PDT by lbryce (Barack Hussein Obama:The Worst is Yet to Come)
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To: lbryce

Viewed as a whole it doesn’t appear to be expanding from a central point. What it does look similar to though is a neural net.


45 posted on 05/11/2014 1:52:37 PM PDT by TigersEye ("No man left behind" is more than an Army Ranger credo it's the character of America.)
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To: Cboldt

I tend to think something in the nature of expansion has to exist, to accommodate the travel of light.


Still the question remains, could the universe exist without invoking the unknown properties of “Dark energy/Matter” ?

If the answer is yes, then why are we wasting/exploring models that can’t be proven ?

If the answer is NO, then how is it that we know anything ?

What other “Dark” properties will we assume and why ?

IMHO, science has transitioned from empiricism to pure speculation. It is the popular acceptance of this speculation that is destroying the foundations of belief.


46 posted on 05/11/2014 1:57:50 PM PDT by Zeneta (Thoughts in time and out of season.)
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To: seowulf
since they don't know what it is, how do they map it?

Because we can observe the red-shifts of distant galaxies. The red-shifts are non-linear as a function of distance. The expansion should be flat (universe is infinite) or slowing down (gravity is slowing the expansion, possibly causing a re-collapse). But instead the father away the galaxies are, not only are they not slowing down, they are moving *faster* (the 1st derivative of motion -- rate of change of position if increasing over time is increasing), and in fact they are even accelerating as they go (the 2nd derivative -- rate of change of velocity is also increasing).

It's totally bizarre. Nothing in current cosmological models can explain it. Gravity just doesn't work that way. So physicists call it 'dark' (meaning unknown).

47 posted on 05/11/2014 2:00:41 PM PDT by Gideon7
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To: lbryce

Behold the void, it is not
the void of nothingness
but thine own intellect,
unobstructed , blissful and shining.

Buddhist prayer.


48 posted on 05/11/2014 2:07:14 PM PDT by tet68 ( " We would not die in that man's company, that fears his fellowship to die with us...." Henry V.)
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To: lbryce

“...if you EXCEPT the powers of human memory...”

Does she mean to remove the powers of human memory from the theory?


49 posted on 05/11/2014 2:10:20 PM PDT by VerySadAmerican
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To: lbryce
"For the First Time, We Have a Detailed Model of the Universe"

Does it have a hockey stick?

50 posted on 05/11/2014 2:13:39 PM PDT by MV=PY (The Magic Question: Who's paying for it?)
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