Millennium Simulation: "The Largest Model of Our Universe"
433 replies, posted
[QUOTE=Jack Bryce;14151760]The universe would have to be expanding at a rate faster than the speed of light for the light to never reach us. So, the question is, is the universe expanding faster than the speed of light?[/QUOTE]
No. It did at one point in the distant past (the inflationary epoch) and I believe that it's actually speeding up again. I read in Scientific American that apparently in about 100 million years the universe will be expanding faster than the speed of light and thus the entire of the universe outside of our own galaxy (well, supergalaxy (local cluster will merge as a single supergalaxy) will be completely dark until the end of time.
[QUOTE=sltungle;14151792]No. It did at one point in the distant past (the inflationary epoch) and I believe that it's actually speeding up again. I read in Scientific American that apparently in about 100 million years the universe will be expanding faster than the speed of light and thus the entire of the universe outside of our own galaxy (well, supergalaxy (local cluster will merge as a single supergalaxy) will be completely dark [b]until the end of time.[/b][/QUOTE]
That's assuming that time has an end.
[QUOTE=Jack Bryce;14151801]That's assuming that time has an end.[/QUOTE]
Well in the case that it doesn't the universe will remain dark forever (seeing as once all of the other stars are pulled away from our galaxy faster than light we'll only have our own ones... then eventually they'll all burn out anyway).
[QUOTE=sltungle;14151813]Well in the case that it doesn't the universe will remain dark forever (seeing as once all of the other stars are being pulled away from our galaxy faster than light we'll only have our own ones... then eventually they'll all burn out anyway).[/QUOTE]
Regardless of whether what you're talking about actually happens, there's more than enough space out there to keep us puny humans busy with our telescopes and super-computers.
[QUOTE=Jack Bryce;14151819]Regardless of whether what you're talking about actually happens, there's more than enough space out there to keep us puny humans busy with our telescopes and super-computers.[/QUOTE]
Well most estimates put the 'end of stars' at about 100 trillion years from now (which is 100000 billion). That's when it's theorised that the last dwarf stars will burn out. After that no more will form as there'll literally be no hydrogen or helium (at least not in sizable volumes) left for stars to form.
[QUOTE=sltungle;14151847]Well most estimates put the 'end of stars' at about 100 trillion years from now (which is 100000 billion). That's when it's theorised that the last dwarf stars will burn out. After that no more will form as there'll literally be no hydrogen or helium (at least not in sizable volumes) left for stars to form.[/QUOTE]
Wow, where will all the energy go?
[QUOTE=livelonger12;14147287]We're actually the most important in the universe. The universe revolves around humans, especially those in power.[/QUOTE]
This is how religious people think and I find it rather hilarious.
We're a bunch of specs on a ball of dirt hurtling through what seems to be an infinite amount of black space and you think we have some significant design or purpose and that anything we do is relevant in the vast cosmos? Give me a break.
[QUOTE=Jack Bryce;14151856]Wow, where will all the energy go?[/QUOTE]
All of the radiation left will just go off into space. I guess some of it will be absorbed by the many black holes that will roam the universe but most will probably just keep on going for however long it physically can without being undisturbed. Not really much else that can happen to the energy. It can't 'disappear' (unless it's pulled into black holes or the universe itself disappears (or some other weird thing happens), that'd violate the laws of physics.
There is a universe in the brain of each of us.
Our universe is in someones brain.
why is it so big~
;-;
Well, now I know where to get funky new desktop wallpaper
[QUOTE=JohnnyMo1;14146567]"One parsec is defined to be the distance from Earth to a star."
Lol, no it isn't.[/QUOTE]
Definitions of parsec on the Web:
* a unit of astronomical length based on the distance from Earth at which stellar parallax is 1 second of arc; equivalent to 3.262 light years
wordnet.princeton.edu/perl/webwn
[QUOTE=sltungle;14151896]All of the radiation left will just go off into space. I guess some of it will be absorbed by the many black holes that will roam the universe but most will probably just keep on going for however long it physically can without being undisturbed. Not really much else that can happen to the energy. It can't 'disappear' (unless it's pulled into black holes or the universe itself disappears (or some other weird thing happens), that'd violate the laws of physics.[/QUOTE]
You know, some people would be too frightened to ever believe this, but I honestly wouldn't like it any other way. Regardless of my limited lifespan, It's just amazing that something so great and so warm could simply drift apart, burn out, and freeze. And all you need is a little dark energy and a lot of time :)
[QUOTE=Barney1337;14152241]You know, some people would be too frightened to ever believe this, but I honestly wouldn't like it any other way. Regardless of my limited lifespan, It's just amazing that something so great and so warm could simply drift apart, burn out, and freeze. And all you need is a little dark energy and a lot of time :)[/QUOTE]
It shows that even though to universe is so massive and powerful(?) it (like us) will eventually die.
[QUOTE=Jack Bryce;14152517]It shows that even though to universe is so massive and powerful(?) it (like us) will eventually die.[/QUOTE]
One theory is that it could collapse, squashing everything up smaller and smaller, until it reaches some limit and explodes again - another big bang, another entirely different universe.
Who knows, we might not be the first universe in our line, it could be an infinite cycle, ours may have been born from the death of another universe, and that from the one before it, and that from the one before that on until infinity.
There could be an infinite amount of other universes existing alongside our own - think our universe isn't big enough? There could be more! Forever expanding and collapsing, exploding into energy and life, billions of them.
[QUOTE=Hivemind;14152652]One theory is that it could collapse, squashing everything up smaller and smaller, until it reaches some limit and explodes again - another big bang, another entirely different universe.
Who knows, we might not be the first universe in our line, it could be an infinite cycle, ours may have been born from the death of another universe, and that from the one before it, and that from the one before that on until infinity.
There could be an infinite amount of other universes existing alongside our own - think our universe isn't big enough? There could be more! Forever expanding and collapsing, exploding into energy and life, billions of them.[/QUOTE]
If we aren't the first universe I wonder what the previous intelligent creatures looked like?
[QUOTE=sltungle;14151896]All of the radiation left will just go off into space. I guess some of it will be absorbed by the many black holes that will roam the universe but most will probably just keep on going for however long it physically can without being undisturbed. Not really much else that can happen to the energy. It can't 'disappear' (unless it's pulled into black holes or the universe itself disappears (or some other weird thing happens), that'd violate the laws of physics.[/QUOTE]
As the universe continues to expand matter will be dragged along aswell. Eventually even protons and electrons will be pulled into shreds and the universe disintegrates into its most basic building block (possibly strings, if you're into that theory) and the temp reaches 0k. The universe will end its days in a completley frozen state. This is called the heat death and is the most plausible end-theories, look it up.
The physicists who deal with dark matter are funny (even if they don't know it). They've proposed two possible particles that explain dark matter:
Wimps and Machos.
So far more believe that the Wimps are responsible. Wimps are beatin up the machos, hurr hurr
[QUOTE=Malumbre;14151881]This is how religious people think and I find it rather hilarious.
We're a bunch of specs on a ball of dirt hurtling through what seems to be an infinite amount of black space and you think we have some significant design or purpose and that anything we do is relevant in the vast cosmos? Give me a break.[/QUOTE]
No, it's not. There are no aliens until observational evidence arises; we have no form of image capturing of other intelligent life - we are the only ones that exist in the universe at the present. However, there may be no other life, and we may be the only ones that exist, and thus we're the most significant entity in the entire universe. Our galaxy - solar system - planet - and country is the most important (The US). And furthermore, those in power within the country are the most important of the entire universe.
[QUOTE=christarpv2;14146543]there HAS to be another life form out there somewhere[/QUOTE]
There is, if you think about it, it would have to be impossible for there not to be, we just need to find it.
[QUOTE=KKram16;14153601]There is, if you think about it, it would have to be impossible for there not to be, we just need to find it.[/QUOTE]
No, there isn't.
[QUOTE=Lankist;14149973]http://imgs.xkcd.com/comics/the_drake_equation.png
The Drake Equation is speculative bullshit.[/QUOTE]
Speculative (because not proven) but based on simple concept: Probabilities.
That does not mean it's wrong.
[QUOTE=XcoliahX;14151131]Yes, the universe is fucking infinite(..)[/QUOTE]
Not proven. It is just getting bigger, mustn't have boundaries and mustn't be infinite.
And don't mix up infinity with "still growing". That are two different things.
[QUOTE=VaultBoi;14147051]a long time ago, people really thought that the earth was flat, and the sun was a god. Some still think that we are the only alive things[/QUOTE]
To get sidetracked for a second, i think it's much more logical to pray to the Sun as a god rather than an invisible man, as the sun actually gives us life, and food and warmth and can be seen etc. It's still silly to prey to something but it makes more sense that that something is the sun.
[QUOTE=sltungle;14151495]Wow, great proof there. Completely ignore the fact that space is EXPANDING. How the fuck can something that is infinitely large expand? It can't![/QUOTE]
Infinitely big sets can still expand. Define a metric which grows over time.
[QUOTE=sltungle;14151495]Only things with boundaries can expand and things that are infinitely large, by definition, have none.[/QUOTE]
They can have boundaries, for example infinity itself.
While the set [img]http://39051.vs.webtropia.com/cgi-bin/mimetex.cgi?\mathbb{R}[/img] is truely infinite and has no boundaries it's closure [img]http://39051.vs.webtropia.com/cgi-bin/mimetex.cgi?\bar {\mathbb{R}} = \mathbb{R} \cup \{ -\infty,\infty \}[/img] has.
Another thing would be [img]http://39051.vs.webtropia.com/cgi-bin/mimetex.cgi?\[0,\infty\)[/img]. That sets is infintly big and has at least a boundary at zero.
Geezus christ livelonger12, can you please stop shitting up the thread with your bullshit "NO!NONONONONO!"? You look like a fucking child.
[QUOTE=Jack Bryce;14151760]The universe would have to be expanding at a rate faster than the speed of light for the light to never reach us. So, the question is, is the universe expanding faster than the speed of light?[/QUOTE]
It has a specific rate of expansion per infinitesimal space unit. It's not constant (it's again going to increase) but after a certain distance of space, you'll reach a point you can't ever reach since space between expands faster than light emitted needs to pass through that space. That's the natural boundary of [u]observable[/u] space.
Example: Let's say space expands by 10 m every light year and second. So a point in 2 light years distance actually moves away from us by 20m every second and so on - Until you reached c.
[QUOTE=livelonger12;14153579]No, it's not. There are no aliens until observational evidence arises; we have no form of image capturing of other intelligent life - we are the only ones that exist in the universe at the present. However, there may be no other life, and we may be the only ones that exist, and thus we're the most significant entity in the entire universe. Our galaxy - solar system - planet - and country is the most important (The US). And furthermore, those in power within the country are the most important of the entire universe.[/QUOTE]
Judging by the first two sentences, you'll assume that I don't have legs until I show you a picture of them, right? Also, you are and extremely arrogant and self-absorbed person if you think that humans are the most important things in the universe, why can't you just accept that you are nothing more than a worthless pixel against the Ultra-Mega-SuperHD that is everything?
[QUOTE=frontman001;14150812]-tim and eric clips-[/QUOTE]
Tim and Eric are the epitome of everything that is bad about television. Take that shit elsewhere.
[QUOTE=sltungle;14151896]All of the radiation left will just go off into space. I guess some of it will be absorbed by the many black holes that will roam the universe but most will probably just keep on going for however long it physically can without being undisturbed. Not really much else that can happen to the energy. It can't 'disappear' (unless it's pulled into black holes or the universe itself disappears (or some other weird thing happens), that'd violate the laws of physics.[/QUOTE]
Shit, by them time we're worrying about the universe going dark, I wonder how vastly different and more complex the laws of physics will be.
Space fucking blows my mind.
[QUOTE=markg06;14152197]Definitions of parsec on the Web:
* a unit of astronomical length based on the distance from Earth at which stellar parallax is 1 second of arc; equivalent to 3.262 light years
wordnet.princeton.edu/perl/webwn[/QUOTE]
C'mon guys, I explained that in the first page/second page of this entire thread! So, whats the current question on the table for debate (Heat Death, I presume?)
Heat Death is the ultimate triumph of Entropy. Since Entropy dictates that all energy must dissipate evenly over a set amount of space, Heat Death is when no more Energy is being produced, yet space is still being created. So, the reason its called "Heat Death" is not as though the Universe is going to overheat, but rather that the concept of one place being "Hotter" than another will be non-existent, where eventually all the energy in the Universe will be similar to Background Radiation, extremely cold and perfectly spread out.
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