Posted on 09/26/2012 7:22:19 PM PDT by lbryce
Like photographers assembling a portfolio of best shots, astronomers have assembled a new, improved portrait of mankind's deepest-ever view of the universe.
Called the eXtreme Deep Field, or XDF, the photo was assembled by combining 10 years of NASA Hubble Space Telescope photographs taken of a patch of sky at the center of the original Hubble Ultra Deep Field. The XDF is a small fraction of the angular diameter of the full moon.
The Hubble Ultra Deep Field is an image of a small area of space in the constellation Fornax, created using Hubble Space Telescope data from 2003 and 2004. By collecting faint light over many hours of observation, it revealed thousands of galaxies, both nearby and very distant, making it the deepest image of the universe ever taken at that time.
The new full-color XDF image is even more sensitive, and contains about 5,500 galaxies even within its smaller field of view. The faintest galaxies are one ten-billionth the brightness of what the human eye can see.
I went to the you tube link... then watched about 4 of the suggested videos on same topic. I’m just saying... this is nothing more than time I’ll never get back. That’s the only true information about black holes, or factualy information about time space continuium.
To your second point, no one knows since our big bang created our space-time and it not thought to be possible to observe another space time even if one existed. So maybe there was just one big bang or maybe there is a never ending series of big bangs. Right now we don't know and finding out if other big bangs happen will not be an easy thing to do. There is much to learn yet.
Very, very interesting. Then I'd like to ask a question, if you don't mind: Do you think there's any way the 'spooky action at a distance'/non-locality/EPR phenomenon can be used to actually communicate instantaneously? ie, open and close switches instantaneously, transfer 1's and 0's (computer language) instantaneously? Some other way?
Not sure what you're getting at. Do you mean the video didn't describe the notion of expanding space clear enough for you?
What is the basis for that? What can rip atoms, stars and everything else, apart is their entering a black hole. There is no evidence that I know of that suggests space expansion will or could at some eventual point rip objects apart.
Do you think there's any way the 'spooky action at a distance'/non-locality/EPR phenomenon can be used to actually communicate instantaneously? ie, open and close switches instantaneously, transfer 1's and 0's (computer language) instantaneously? Some other way?No instantaneously conveyed information is possible; that's in the math. It really works exactly like the math says.
I can send you a packet of quantum entangled stuff which you can use as a one time pad to do perfect encryption or decryption. There is rather less market for that than you might think. And the hard part of quantum links is the part that goes "emit a single photon".
But for you people concerned about security look at the publicly available D-wave stuff which I believe is at 128 bits and double the bit-count for what NSA has. You really need >1024 bits for keys you really want to be secure for the foreseeable future.
This is all just current theory of course and likely to changes as we learn more about our universe.
I am not an expert, but the theory suggests to me that space is a quantum quantity, in that only one piece of quantum matter can exist in one quantum of space. Other wise matter would simply be pulled into the larger space. Something must be preventing that, so I've assigned it (space) quantum characteristics.
Oh, black holes get ripped apart too, if there are any that have not all ready evaporated in that far distance future.
Don’t have much time at the moment, but consider this...
“Observations suggest that the expansion of the universe will continue forever. If so, the universe will cool as it expands, eventually becoming too cold to sustain life. For this reason, this future scenario is popularly called the Big Freeze.[1]
If a cosmological constant accelerates the expansion of the universe, the space between clusters of galaxies will grow at an increasing rate. Redshift will have stretched ancient, incoming photons (even gamma rays) to undetectably long wavelengths and low energies.[2] Stars are expected to form normally for 1×1012 to 1×1014 years, but eventually the supply of gas needed for star formation will be exhausted. And as existing stars ran out of fuel and ceased shining, the universe would slowly and inexorably grow darker, one star at a time.[3] §IID, [4] According to theories that predict proton decay, the stellar remnants left behind would disappear, leaving behind only black holes which themselves eventually disappear as they emit Hawking radiation.[5] Ultimately, if the universe reaches a state in which the temperature approaches a uniform value, no further work will be possible, resulting in a final heat death of the universe.[6]”
http://en.wikipedia.org/wiki/Future_of_an_expanding_universe
In other words, there is nothing that I could find (yet?) suggesting that individual objects will eventually be torn apart by space expansion. The forces holding them together are too strong, particularly atoms. I’m not even sure that galaxies would be ripped apart. Gravity may continue to hold them together as well. If you can find some expert source that supports what you’re saying, please provide it.
This final sentence in my recent post (quoted piece below) might possibly support it to some degree. However, it isn’t suggesting that matter will be torn apart by the expansion, but rather through loss of energy as a result of the expansion and other factors (proton decay, Hawking Radiation(black holes), etc). But then, it just might be that matter comes to a ‘halt’ in the absence of energy, whatever that precisely means, not be ripped apart.
“Ultimately, if the universe reaches a state in which the temperature approaches a uniform value, no further work will be possible, resulting in a final heat death of the universe.[6]”
http://en.wikipedia.org/wiki/Future_of_an_expanding_universe
Heat death of the universe
“The heat death of the universe is a suggested ultimate fate of the universe, in which the universe has diminished to a state of no thermodynamic free energy and therefore can no longer sustain processes that consume energy (including computation and life). Heat death does not imply any particular absolute temperature; it only requires that temperature differences or other process may no longer be exploited to perform work. In the language of physics, this is when the universe reaches thermodynamic equilibrium (maximum entropy). The hypothesis of heat death stems from the ideas of William Thomson, 1st Baron Kelvin, who in the 1850s took the theory of heat as mechanical energy loss in nature (as embodied in the first two laws of thermodynamics) and extrapolated it to larger processes on a universal scale.”
http://en.wikipedia.org/wiki/Heat_death_of_the_universe
google big rip, it is an interesting read.
This is interesting... It’s saying that all stars will eventually collapse into black holes, as they use up their energy supply and can no longer hold off the effects of gravity. Then, if Hawking is right, they would ultimately vanish via Hawking Radiation.
“If the proton does not decay, stellar-mass objects will still become black holes, but more slowly. The following timeline assumes that proton decay does not take place.”
http://en.wikipedia.org/wiki/Future_of_an_expanding_universe#Future_without_proton_decay
If protons do not decay as described above:
“In the event the proton does not decay as described above, the Degenerate Era will last longer, and will overlap the Black Hole Era. In a timescale of approximately 10^65 years, apparently rigid objects such as rocks will be able to rearrange their atoms and molecules via quantum tunnelling, behaving as a liquid does, but more slowly.[10] However, the proton is still expected to decay, for example via processes involving virtual black holes, or other higher-order processes, with a half-life of under 10^200 years.[3], §IVF For example, under the Standard Model, groups of 2 or more nucleons are theoretically unstable because chiral anomaly allows processes that change baryon number by a multiple of 3.”
http://en.wikipedia.org/wiki/Future_of_an_expanding_universe#Future_without_proton_decay
Interesting indeed.
“The Big Rip is a cosmological hypothesis first published in 2003, about the ultimate fate of the universe, in which the matter of the universe, from stars and galaxies to atoms and subatomic particles, is progressively torn apart by the expansion of the universe at a certain time in the future. Theoretically, the scale factor of the universe becomes infinite at a finite time in the future.”
http://en.wikipedia.org/wiki/Big_Rip
Re: Big Rip
It sounds like the hypothesis relies on the expansion energy growing stronger and stronger, until, at some point, it would be great enough to rip individual objects apart, even atoms.
No “Big Rip” in our Future: Chandra Provides Insights Into Dark Energy
Space is expanding at the speed of light? Okay... whatever you say. Go look at old buildings. They occupy space. Why aren’t they falling down because the space inside them is expanding?
Where did I say that, although it could be the case at some distant point in the future. And it wouldn't violate Einstein's theory because it wouldn't involve objects moving *through* space faster than light (apparently impossible), but rather space-time itself being created faster than light.
Go look at old buildings. They occupy space. Why aren’t they falling down because the space inside them is expanding?
Space expansion is only occurring, or observable, at the grand scale of the regions between galaxies and so forth.
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