Big bang Definition and 909 Threads

big bang, big crunch? I have a couple questions. The big bang happened and now the universe is expanding, and It will at some point contract and begin back at where and what it was at the big bang. Is that correct? Now, after it crunches it will bang again. Is it going to produce the same...

I need some clarification on exactly (or not) how the big bang worked. If there was a uniform density of energy at t=0 (or whatever you want to call it) that began expanding at a uniform rate, how were things formed? It seems like if this were the case, everythings gravitational force would...

On the timeline of everything, at point 0, all matter was infinitely compressed and dimensionless, right? Then, it exploded, and produced the Big Bang… We know that the original mass produced by the big bang should have been very bumpy to produce galaxies like it did, and this was confirmed...

If charged particles; like protons and electrons and the others; come out of the singularity then they ought to be accelerated by inflation. If a great increase in space epxansion took place and this is identical to "accelerating" then charged particles ought to have radiated light. This...

Lets say we restarted the big bang, what are the chances that we would get different physical laws? Or is this one of those unaswerable questions?

This continues the “Big Bang” thread which was locked. I trust this does not mean that scientific criticism of 'mainstream theories" is banned here. I notice that “chronos” has not responded. Perhaps scientific debate is not his thing. The question of scientific method is key—we debated this...

According to the red-shift every thing in the everything in the universe is move further and further way… so, what was the big bang? And if gravity won't pulls everything back to the centre of the universe there cannot be another big bang, one again, what the hell was the big band, the universe...

All right, so what I don't understand about the big bang theory is that when it describes the creation of atoms, does it mean that the particles were already in existence and the explosin only made the particles come together? or were the particles actually created by the big bang? If the...

According to Newton's law of action-reaction, wouldn't a finite (non-singular) universe at the onset of the big bang experience condensation along with expansion? Could this duality be compatible with the cosmological principle of isotropy and homogeneity?

I want to know everything about Big Bang theory. For example what were the clues which led scientists to this theory and how much they are certain of this theory. Big Bang theory says how this universe came to existence and started its expansion, now I want to know what will happen to the...

Where there is explosion, there is usually a concomitant implosion. If the Planck length, L*, demarks an original radius for the cosmos, a collapse therefrom, symmetrical to the big bang expansion of spacetime occurs with the conservation of momentum. This "Big Crush" is omnipresent...

I am not sure if this is the right place to ask this question. I am an amateur but I enjoy reading and trying to understand relativity. If anyone is aware of an article that addresses this question, I would appreciate the reference so that I can read up on it. Unfortunately, there are a lot...

Why is the energy coming as a result of a Big Bang so explosive as to burst into universe(s)? How can something coming from nothing have so much energy? Why is it in physics, the smaller something is the more energy it has? What is, in physics, the exact moment of an explosion? Please

this guy is one of those "modern science is wrong because i don't understand it" types. and this is the first time i can't see a flaw in his logic. what am i missing? * refers to the universe pre big bang

Assume you have a field of particles in a sphere which is twenty billion light years in diameter. Assume these particles are moving - randomly vectored at random velocities with no extreme bias for direction or velocity. Assume that as those particles collide, mass attraction causes most...

I was reading some stuff about the big bang and about the singularity. When the big bang happens, is a whole lot of matter just created? And, Are Photons counted as matter? Thanks

From what I understand, empty space has a temperature of 2.7 degrees K? And that empty space still gives off micro-wave radiation from the big bang? Can someone help me visualize this? For me, the idea of empty space giving off radiation and having a temperature that isn't absolute zero is...

I have a question. I decided not to put it in the "theory" section because I'm no physicist and I don't know if I'm right. From what I understand about the fluctuation theorem, the smaller the area in which it takes place, the more likely entropy is to decrease. Could it be at the beginning...

I had a thought while I was driving to work this morning. If the Big Bang bundled up the universe into a massive structure, shouldn't the sheer gravitational force of such a structure turned such a structure into a huge black hole?? Or maybe it did, and we're living inside of a black hole. And...

Salutations! What do you think about the objections made by Eric Lerner and http://metaresearch.org/cosmology/BB-top-30.asp against the Big Bang's Theory?

I've read some things about that, and the explanation was with a theory that aplies to quantum physics that the smallest particles, appear, disappear shift direction, in sum they apply the theory of chaos to the big bang.. i don't understand how you can apply a theory that is used for infinitly...

Do you think that Big Bang theory reject God existence? I don't know if you discuss about it before.But I want to know do you think that we couldn't accept Big Bang theory and God existence together?

hi, i am new and have a paper due on tuesday about the integration of superstring theory into cosmology for my astro class. I am not very deeply read into either of these topics so if anybody wants to help me out with any information, that would be great. thanks

I was just wondering if anyone knew of good projects to display the big bang theory. I have read about one where you place dots on a balloon and then blow it up to show how the universe is expanding, I was hoping someone might have other ideas maybe with more pizazz. Thanks for any ideas.

I agree with the idea that a big bang was a singularity of matter, which burst into all matter that we know, and that the universe is expanding-galaxies are drifting apart. What is the common understanding of what was before this singularity. I can only deduce that it was another universe...

Interesting experiment http://www.usatoday.com/tech/science/discoveries/2005-04-19-big-bang-mystery_x.htm

http://www.cnn.com/2005/TECH/space/04/18/liquid.surprise.ap/index.html

I'm new here, people, so please forgive my ignorance. I don't study physics or astronomy - I'm just a closet AstroGeek if you will. Here's my dilemma: I'm comfortable with the idea of being able to "see" the Big Bang via telescope because the light we're seeing originated 30+ billion light...

Could black holes get so enormously dense and big that they cannot swallow anything else and eventually explode? Like a big bang. What if black holes are the eventual evolution of space/time/existence as we know it. All matter is swallowed back by all the black holes in the universe, then black...

Why should "our" big bang be the only one? Loop quantum gravity has made significant progress at exploring the classical big bang and black hole singularities. Both circumstances are non-singular when LQG is used to model them: what was formerly a singularity in the classical model is removed...

One reason people believe in the big bang is that everything is receeding from everything else and if we run time backwards then everything is crunched together. Now the descriptions I've read usually refer to the early universe as a finite space filled with hot gas. My question is, if our...

is this arthicle true? or is it just mostly hype? here

if matter and anti-matter are highly explosive when they collide, then how come there hasn't been a second big bang? where has all the anti-matter gone, if there were equal amounts for the big bang, then why is there matter, but apparently no anti-matter sorry if i got something wrong here

Why no 'Big Crunch' a femtosecond after "Big Bang"? When the Universe was the size of a grapefruit, with the mass of 100 billion galaxies (actually, 20 times that mass, I suppose, given dark matter and dark energy), why did it not instantly suffer gravitational collapse into a megamega black...

[FONT=Arial]undefinedundefinedundefined So. how can all the matter in the whole universe be compressed into one small little ball. all the matter in the UNIVERSE. it seems impossible. but I am sure a lot of u guys have a lot of ideas. maybe all the matter in the universe was under a great deal...

I had a discussion with some friends about this. I figured this would be a great place to get a real anwser ( since we are all want to be's ) What was before the big bang ? There had to be something in order for the matter that was there to be condensed in the first place right ? Did...

There was a section in Greene's book that actually helped me form a curious idea about the origins of the universe and I wanted anyone's thoughts on it. If there was only one Big Bang, then shouldn't there be a concentration of matter/gas in the region of the center as everything spreads in all...

The Big Bang was basically caused by an extreme heating up of energy, right? Well, how did that energy get there if it can neither be created or destroyed? This question is assuming I have my facts straight.

Stephan Hawking states that there could have been a so called "Pre-Universe" or a universe before the Big Bang. Now Black holes he states can lose their mass because matter is somewhat able to escape. Thats why when you look at pictures of black holes you see that there is matter streaming at...

Why did Big Bang happened in the first place?

I came across this and was wondering if it was just hot air or if it was serious: http://www.rense.com/general61/bbang.htm

Now i really don't know much about the M theory so if i say anything stupid give me a break, now I've heard heard the theory that the big bang was the collision of 2 branes, 1 into the other. Now i can see this happening and being the cause of it and would imply it will keep happening, but I've...

Dear All, I am trying to understand SPECIFICALLY the physics HOW and WHY the discovery of the 2 Bell scientists is hailed as something like the cosmological equivalent to the "missing link" as regard the Big Bang Theory ? I am looking for any and all links that explain this connection...

I'm looking for any information available concerning what "was" before the Big Bang. Anyone that can help? Thanks

I read this about a white hole and had some thoughts: "The short answer is that a white hole is something which probably cannot exist in the real universe. A white hole will turn up in your mathematics if you explore the space-time around a black hole without including the star which made the...

Big Bang...? ok so this is basically what I know of the theory can sombody point out if I'm go wrong with any of thi? ok so once there was an endless void of nothingness.there was no matter no particles nothing, and then a random explosion accured in the empty void and thus crated particles...

I have a very limited knowledge about entropy, just the usual layman view, e.g. entropy reflects the number of ways a system can be arranged, or in even more layman language, the degree of order / disorder of the system. A system which can be subdivided in groups according to different...

Hi all, It's said that approximately 3 seconds after/into the Big Bang, the 'universe' expanded at a velocity > c. However, this breaks the laws of SR, right? "No mass can equal/breach c". So, could someone enlighten me on this subject? Why are BOTH "No mass can equal/reach c" and "the...

The Big Bang and the Creator's "Soup" I have never believed in the Big Bang Theorey as it sounded preposterous that all the "matter" in the Universe could have been squeezed into such a small mass. However, I want to put forward this "Supposition" as to a way in which "The Big Bang" could have...

If and when the "Big Bang"... Here's one I've pondered for almost seventy summers [and winters; etc.] When the Universe began, was the black container of space "there" to welcome the expanding matter, or was it created as the matter expanded from its initial inception? If the space was "there,"...