Is The Universe Expanding Now - Topic

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Mar 7 2012 05:21pm

Quote (novocane @ Mar 4 2012 04:48pm)

Actually not exactly. The universe isnt just expanding faster than light relative to the otherside of the universe, it's actually expanding faster than light (and accelerating). It doesnt violate relativity, though. If you think of the universe as a graph, and planets/galaxies as points on the graph, the cooridinates of the graph are what's expanding.

Another analogy is if you draw two dots on a balloon, and inflated the balloon, the way the dots expand is comparible to the way galaxies expand. So you can almost think of it as the space is increasing. And this expansion occurs faster than light.

And for the record, information can also travel faster than light. So dont say "nothing" can travel faster than light.

/edit - just double checked with the nasa site and they say:

" it is space itself that is expanding faster than the speed of light, driving objects further apart at an increasing rate"

universe expansion refers to the expansion of the "known universe", which is like the galaxies and shit

They think the universe is either an infinite plane (so like infinite on x , y direction, finite on the z axis) or a finite torus. Also we'll probably never know for sure which one it is

Sorry Again. Nothing Travels Faster than light, not even information. Even entanglement has limitations in moving information / but not contrained by light speed by theory (basicly). and inflation took place only as a theory to explain the paradox in the early seconds of the big bang, it is not continuing today.

I beleive you are misinterpreting the articles your are reading.

novocane

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#22

Mar 7 2012 05:36pm

Quote (FullArcFG @ Mar 7 2012 06:21pm)

Im not misinterpreting anything. the universe expanding faster than speed of light is well established - and its not a relativistic effect - its actually expanding faster the light .

" it is space itself that is expanding faster than the speed of light, driving objects further apart at an increasing rate"

thats word for word from nasa's website. And quite honestly you can google it and you'll get the same answer everywhere

And information traveling fast than light is also well documented in entanglement. Sure there's limitations with what you can do with the information, but the information does travel faster than light.

http://www.nature.com/news/2008/080813/full/news.2008.1038.html

"quantum mechanics allows for a third way to coordinate information. When two particles are quantum mechanically ‘entangled’ with each other, measuring the properties of one will instantly tell you something about the other. In other words, quantum theory allows two particles to organize themselves at apparently faster-than-light speeds."

This post was edited by novocane on Mar 7 2012 05:44pm

chivas_regal

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#23

Mar 15 2012 11:35pm

Quote (FullArcFG @ Mar 3 2012 04:53am)

OK, so nothing can move faster than the speed of light. But the Universe did just that in the first nano seconds. Along came the theory of "inflation" to explain this without violating that law. After the inflation, the expansion was still no faster than the speed of light and never will be.

So simply said, No the universe is not expanding as fast as it did during the first few seconds, because clearly it is only expanding at the speed of light at best right now.

where did u get that idea from ?
maybe you should study some physics 1st , before you post

Quote (Dmon_Hunter @ Mar 3 2012 11:14am)

???

That's a bit of a stretch.

Distant bodies, particles and photons loose momentum as they travel to unoccupied areas of the universe.

iso validation of the accelerated expansion.

what the hell are you talking about ?

space is expanding , the matter is just along for the free ride .....

Quote (FullArcFG @ Mar 4 2012 08:04am)

If the universe is expanding at the speed of light on one direction, and expanding at the speed of light in the exact opposite direction, than from one end to the other relativetive to each other, they appear expanding at twice the speed of light (relatively speaking). This is not the same as expanding at faster than the speed of light. Sorry to Say, but you are completely misunderstanding the articles you posted and the basic ideas in general.

Fact is, nothing can travel faster than light. The Recent Nutrino experiment that sugested a 6 nano second paradox, itself is now being reviewed due to faulty instrument discovery.

either you havnt thought that through , or you just dont know whatyou're talking about ( im guessing both )
its space thats expanding , not the matter that resides in space
once 2 parts of space are moving away from each other faster than light travels , you will never be able to observe it .......

Quote (FullArcFG @ Mar 7 2012 03:21pm)

wrong
space can and does move faster than light

megadank

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#24

Mar 20 2012 12:48pm

sirius89

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#25

Mar 20 2012 03:06pm

Quote (FullArcFG @ Mar 3 2012 12:53pm)

OK, so nothing can move faster than the speed of light. But the Universe did just that in the first nano seconds. Along came the theory of "inflation" to explain this without violating that law. After the inflation, the expansion was still no faster than the speed of light and never will be.

So simply said, No the universe is not expanding as fast as it did during the first few seconds, because clearly it is only expanding at the speed of light at best right now.

Wrong dude

Yes it expanded faster than it ever had at the start of the Big Bang (Due to inflation) BUT the universe can still expand faster than the speed of light, even Einstein said this, even though his Speciel Theory of Relativity says nothing can go faster than the speed of light.
But how? I tell you how, in Speciel Relativity only things of matter can never reach the speed of light, it can go close to the speed of lights (electrons for instance) but never reach the exact speed. BUT! Space-time is different, Space-time can expand as fast as it will, cause it doesn't behave like matter

Anyways I Guess at some time space will expand faster than the inflation-time again, since the universe is only still accelerating, and by using the Hubble low you can actually calculate that some galaxies are already moving faster away from us than the speed of light

Btw# people should really take some phychizs lectures before they try to answer questions in this topic, seems to me many people are just throwing out random ideas without any real knowledge

This post was edited by sirius89 on Mar 20 2012 03:09pm

Derkaderk

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#26

Mar 20 2012 03:22pm

If space was inflating slower than light, would light be able to leave the universe?

AEtheric

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