How back ground radiation reach us now as no partcle can travel more then speed of light?

Question

12 billion years back big occured. then unverse size was very small but expansion rate was deffinattly less then speed of light then how the radiation that we are reciveing now are reaching us now . because they should have crossed us by now should be out side the universe pretty for away ( hint:- Can anthing go out of universe).

Answer 1

Couple of things. The radiation from the big bang hasn't gone away because it travelled in every direction and occupies the entire universe. Always has, always will.

Second, current theory says the universe did expand faster than the speed of light briefly at the beginning ("inflation"). That doesn't violate any laws of physics. But it did carry much of the universe out of our sight forever.

Answer 2

Are you maybe thinking of the background radiation as being a one-time thing, like it was generated and then went off in all directions like a wave? At the instant of the Big Bang both space and the background radiation were first created. They both FILLED the entire universe, were actually all there was to the universe because it was still too hot for any matter to exist.
Earth is around 4.5-billion years old, meaning that we came along a long time AFTER the background radiation filled the universe. Although greatly cooled due to expansion, the background radiation is still there. It's been around longer than Earth. Imagine a room being heated up to 90-degrees, then the heater turned off. The room will retain its heat for some time, so if you come in later it will still be there.

Answer 3

When the cosmic background radiation formed, the universe had undergone some pretty significant expansion. The universe is so large that there are areas that are so far away that radiation from those areas histories only now reaches us. There are areas of space where the radiation from our area's history is finally detectable (should you be there with a detector!) In fact, everywhere in the universe you can detect the cosmic background radiation. It is the same everywhere. That is an important fact, because it is evidence that our universe was very uniform when it was young.

Hope this helps

Answer 4

Good question. The speed of light limitation doesn't apply to the expansion of space. According to some theories, called inflation theories, shortly after the big bang, the universe expanded much faster than the speed of light for a fraction of a second, and if true, this doesn't contradict Special Relativity. Accepted wisdom has it that some of the galaxies we can see with a telescope are more than 14 billion light years away, even though the big bang only happened 14 billion years ago. Again this doesn't contradict special relativity.

Answer 5

Now it is consider, that reference frame connected with
relict isotropic radiation T = 2,7K is absolute.
But T = 2,7K is not a constant factor.
This relict isotropic radiation continues to extend and decrease
and, hence, approximately over a period of
20 billions years will reach T=0K.
That is a structure of Nothing, of Vacuum, of Absolute Zero.
Absolute God can exist only behind
Absolute reference system : Vacuum T=0K.
2.
The Quantum physics approves, that in the beginning
God /Vacuum created " virtual particles ".
What a geometrical and physical parameters can the particles have in
the structure of Nothing, in Vacuum, in Absolute Zero in T=0K?
=========
According to the laws of physics :
J. Charles ( 1787), Gay-Lussac ( 1802),
W. Nernst ( 1910), A. Einstein ( 1925)
particles in a Vacuum cannot have density, volume
and consequently should be flat figures.
===================
These laws tell, that
then closer to zero T=0K, then the particles lose more their volume.
The volume of these particles aspire to infinity.
And then this “ infinity” comes the brain of physicists
stop to work. They refuse to think any more.
And I say when volume of the particles disappear they
become “flat phantoms”.
These “flat phantoms” are not abstract particles, they are real ones.
Quantums of light flies with speed c=1 have such geometrical form.
=========================
2.
What is a quantum of light?
From all particles, only and only
the quantum of light is a privileged particle.
Only a light quantum has the absolute speed c=1.
==================
The secret of God and Existence is hiding
in the “ Theory of Light quanta”.
================
http://www.socratus.com

Answer 6

Your hint is meaningless in relation to the question.

The big bang is a theory about how the Milky Way Galaxy was created. It does not address the creation of other galaxies.

Nothing in the Big Bang theory suggests that matter ever traveled at the speed of light or even near it. Certainly at that time, however, all kinds of light and radiation were given off. Light and radiation traveled outward at the speed of light. Material matter with mass certainly traveled outwards at much slower speeds such as possibly 15,000 to 50,000 miles per hour.

Radiation that is reaching us now travels at the speed of light. And, I am not sure what you mean by light being out the other side of the universe. I think you are trying to suggest that the universe has some sort of boundaries, or end points. That is not an established fact, and probably never will be established. The distances to the most far away objects in space that we currently know about are in the "billions of light years away." Frankly speaking, that is such an immense distance that whatever is out there beyond that is immaterial to me. And, for all intent and purpose should be for you also. What possible good does it do to speculate about it? You cannot measure the distance from here to nothing. You must always measure from here to something.
Right now we can just measure from here to some of the most distant stars in the most distant galaxies.

There are just simply thousands of other galaxies out there far, far from us, and each one of them has billions of stars inside of it. And, you want to know what is behind each of those??? As in where exactly is the wall? Hey, it is a long, long, long walk away from here.

Consider for a moment that something you can see way, way away is comprised of billions of stars like our Sun. So it is very bright in and of itself, but appears to us as a far away, faint dot of light. The absolute brilliance of that faint dot blocks out the possibility of seeing anything behind it via telescope (of any kind). And radiation noise from that faint little dot most likely blocks out any possible radiation noise we might hear with radio telescopes from behind the faint little dot of light.

Answer 7

Radiation (other than photonic) which reaches us comes from sources closer than the visible end of the universe, so those particles (which travel at sub-light speed) can reach us in reasonable time.

Answer 8

Particles can travel faster than light at 7 times practically tested at Sydney University in Austarlia.

Answer 9

Gravitational time dilation states that factor is going slower in larger gravitational fields. the way i see it (please ultimate me if i'm incorrect) is that a community of area devoid of gravity might retract while severe gravity is without warning present day. Therefor in case you have been in area, you may witness the comparable section frames of area being retracted close to Earth. to place it simpler, in the adventure that your physique in area became right into a million kilometre long and you travelled at a million kilometre an hour, needless to say you may commute the gap in a million hour. Your chum in the international might witness precisely the comparable element together with his physique. a million kilometre long, a million kilometre an hour. the version between the two separate frames from a nil.33 standpoint is that the physique close to Earth has slightly retracted (gotten smaller or bent), which incorporate the human (the human has been born right into a community of gravity, technically the single in area might strengthen). which potential the two people does no longer word something distinctive however the instances may well be. you could desire to endure in techniques countless issues that persons neglect. a million: Clocks are guy made and stable therefor they gained't retract with area as area is in simple terms vacuum. people in the gap station advance taller as much as six centremetres each year (approx). 2: area suits are worn by employing people, if no longer the human might strengthen and clearly die. Spacesuits are extra dense than area. 3: each and every little thing retracts in direction of gravity why might area be distinctive? a guy on the age of 18 is taller than years later while he's 80 one. we are skilled to understand that he shrinks with age yet why? simply by fact gravity over the years has retracted him. wish it somewhat is wise because it somewhat is a difficult subject rely to chat approximately. you will detect extra in concept of Relativity.

Answer 10

the "blackbody" spectrum radiation from early universe is said tobe freely coming from all directions of the universe until today.
nobel prize winners penzias and wilson discovered this.