Big bang Definition and 916 Threads

I have always wondered various questions, out of which these 3 below are on the priority list including a previous topic I questioned here ofcourse without any answer to it. I am no science guy by the way, just curious! So the questions are: 1. Can a black hole contain a wormhole inside of it...

I just saw The Theory of Everything, which is a Hollywood biopic about Stephen Hawking. Of course the physics content had to be watered down and made to serve dramatic and thematic purposes, but a couple of historical points seemed interesting and made me wonder whether they were real: 1...

It's been suggested that the Universe has no more than 10^90 (potentially up to 10^120) bits of information (Seth Lloyd, Computational Capacity of the Universe, http://arxiv.org/pdf/quant-ph/0110141v1.pdf ) As a bit string that's 10^90 arrangements of 0's and 1's. In the same document he...

The question "what was before the Big Bang" is usely answered with the explanation that time was created along with the universe during the Big Bang, and therefor the question is meaningless. I think it is possible tho refrase the question so it 'll become a valid (meaningfull) question; why are...

Consider a flat Robertson-Walker metric. When we say that there is a singularity at $$t=0$$ Clearly it is a coordinate dependent statement. So it is a "candidate" singularity. In principle there is "another coordinate system" in which the corresponding metric has no singularity as we...

I've applied physics in nuclear weapons work, finance, biochemistry, molecular dynamics, space physics, and other areas. High school students, and even young Air Force officers with technical degrees often have little idea of the value of physics. And physics loses. Linked here to a Prezi...

During the first second of the Big Bang a mind boggling amount happened. So much so that we need to measure it in plank time to appreciate all the stages that occur. And in that 'bang' spacetime was created. My question is this. As space dilated would time not dilate? Meaning. If I were able to...

Obviously, I can understand the literal meaning of the phrase "the big bang happened everywhere at once" But I have never read a satisfactory explanation that eloquently helped me understand this concept...

OK, knowing enough astrophysics to get myself hurt, I'd like to pose the following poser that whupped me upside the head while watching the Black Hole marathon last night on the Science Channel. We have; 1) The Big Bang theory, 2) An expanding - at least, for the moment - universe, and 3)...

Two Issues: 1 Accellerating Universe Expansion (Inflation) As I understand this this arises out of the observation that the further away object are, the faster they are moving, (relative to us). This I assume is the origin of the search for “Dark Matter” & “Dark Energy” Surely if a star...

Lately there have been a lot of shows about the Big Bang. They kinda use the same material and say the same thing. In a nut shell they touch on expanding space and everything that exist comes from a space about size of an atom. I wish they would explain how if we look far into space from Earth...

hi, 1. radiation travels faster than matter. 2. our Earth was formed much after the big bang. The big bang goes like this. At some point in time and in some point in space (witch we cannot determent so we just leave the location open and say it could have happened anywhere) all the matter...

Hi guys. Newby here. And not all that educated physics wise. But have a question that you likely get all the time. Is there any theories pertaining to BEFORE the Big Bang? As to how this infinitely dense point came into being?

Are we able to apply Quantum Mechanics to a Universe Prior to the Big Bang? Or would such mechanics require an entirely new set of formulas?

I'm looking at general relativity and particularly considering what happens at the Big Bang. I think the Friedman equation is H^2=\frac{8\pi G}{3}\rho so I see that as the matter density goes to infinity, H goes to infinity. According to this video (around 10:10), this is where the problem lies...

It would seem to me that we exist in an infinitely large space. That a big bang could not encompass all matter because all space extends infinitely. That with infinite space there is infinite possibilities for things to happen, such as for matter to exist. That space can exist and is infinite...

I have a question regarding LQC that I can't find anywhere, and since most of the relevant answers to similar questions are here I may as well ask, here... For a simple background, when I was introduced to the big rip and combined that with the big bang, I immediately thought the two co-existed...

Taken from another post. The Universe was so hot immediately after the Big Bang, nothing but energy could exist - Current can only flow in one direction through the device between the two electrodes, as electrons emitted by the hot cathode travel through the tube and are collected by the...

http://physicsworld.com/cws/article/news/2014/sep/02/big-bang-ruled-out-as-origin-of-lithium-6 The hystory of BB nucleosynthesis is quite busy, Gamow et al. started postulating that all elements were originated in the BB nucleosynthesis process in the late 40s early 50s, it soon became quite...

I am at the lowest level of the spectrum when it comes to this subject, but this has always raised some questions for me. If someone could answer a few of these I am almost positive it will just create more questions in the future, but I would still appreciate it. So here goes. 1. I...

I am curious to know if it is theoretically possible for the origin of the Big Bang to have been the energy released from the ending of a Universe before it. Say the whole Universe ends up as two gigantic black holes devouring each other, then one wins, and eventually all the matter that ever...

All - my first post, and as a lay person interested in quantum physics, forgive me if my questions are naive or ill-informed. Is it possible that the Universe inflated then exploded into being from a singularity smaller than Planck length? If I understand the concepts properly, the Planck...

I've always been curious about about the big bang because (from what I've read) it's a point we're not able predict before. Is there a possibility that our view of an expanding universe just means we can't see beyond the big bang? Or is there a reason that is ruled out and that everything...

The Big Bang is often associated with the concept of a singularity. A singularity is defined as a point in space-time. A common interpretation is that the concept of a point is meant to capture the notion of a unique location in an Euclidean space. This seems to me very misleading in as much...

Hi, I have read that quantum fluctuations have created our universe through the Big Bang. The issue that I didn't understand is that as far as I know quantum fluctuations are properties of space. How could these fluctuations exist before the Big Bang while there was no space before the Big...

Because the speed of light cannot be exceeded, when the big bang happened, the matter that flew out could not have come out at the same time. If it did, the universe would be so crouded in it's first second, it would instantaniously create a large number of black holes swallowing most of the...

http://arxiv.org/abs/1402.2158 Big Bang, Blowup, and Modular Curves: Algebraic Geometry in Cosmology Yuri I. Manin, Matilde Marcolli (Submitted on 10 Feb 2014 (v1), last revised 9 Jul 2014 (this version, v3)) We introduce some algebraic geometric models in cosmology related to the...

Time was created at big bang. Science says, Nothing can happen without time. Then, How did bigbang happen, when there was no time prior to it.

Does the fact that time is infinitely divisible have implications for studying the big bang? As with all studies of historic events, we are looking at the big bang from a backwards perspective. So, if we look at the first second of the start of our universe in the big bang model, we try to...

I watched a BBC video - Wonders of the Universe where the scientist explains that the Big Bang stretched the universe and created space. Is it true? If the above assumption is true, is the space within atom (distance between nucleus and electron) stretched as well?

I just finished Leonard Susskind's video course on cosmology. A question never raised nor mentioned in the course was conservation of information. I mean information in the sense of Liouville's theorem/Unitary operators in QM/Event horizon paradoxes ... At one point Susskind said that the...

Hey PF! Have two questions here for everyone. Recently had a professor define the The Big Bang as "the expansion and cooling of the universe from an originally hot and dense state", but is this correct? To me it sounded more like the description of cosmic inflation...thoughts? Additionally...

Hello all, this is my first post here. I'm about as literate in physics as an ant is literate in algebra, but I was wondering if this theory about the big bang that popped into my head can stand on its own. (I'm doubt I'm the first person to ask this by any means, but I suppose it gives me a...

Hello everyone. Thought of this question while at work. I've read the universe appeared out of nothing and expanded very rapidly to near its final state. Would that be flinging matter faster than the speed of light?

In classical physics we took space and time as distinct absolute. But in GTR space-time continuum only come into play. Even at solar system level this exists as evident from problem of perihelion of mercury and definitely at the big bang moment. But how it is stated that plank time exist at...

Has it ever been explored in science that the other side of a black hole could have caused the "Big Bang"? My thinking is that if a black hole sucks in matter and compresses this matter to a point where it can no longer contain it; would that not cause a collapse on the other end? It has been...

I'm trying to get a basic understanding of the big bang in order to teach an advanced oceanography course to high school students this summer. The course starts with one lecture on the origins of the universe, solar system, the earth, and the ocean. I think I get the basics of BBT from quark...

Homework Statement I'm having a slightly hard time with a topic we are studying at school 'the evolution of the universe'. My first question relates to the Big Bang Model itself; does the Big Bang Model itself describe the evolution of the universe after the Planck time up to this point...

Like many, I have just recently learned about the theory of inflation and, though learning about, noticed a problem with the Big Bang Theory. To gather information on the Big Bang, telescopes point their "cameras" into deep space so we can "see" the early universe as it was forming. However...

I am not a scientist by training. I have a graduate degree in ancient languages. Is this the right place to ask some basic questions about the Big Bang?

I am reading Dan Brown's book, 'angels and demons'. It said that anti matter is created by accelerating two ultra thin particle beams in opposite directions around the accelerator tube. When the ultrafast beams collided they created antimatter. This means that matter is created out of nothing...

Say I have two 5-dimensional bubbles moving towards one another in 5-dimensional space. When they touch, at the monent they touch, they meet at a 3-dimensional "point." As they join, the 4-dimensional hyperplane created their by common boundary immediately inflates from that point and expands...

hello everyone like the prevailing theory now on how our universe origin has taken is THE BIG BANG. BUT i am studying in 11th and one of my lecturer told me that our universe when exploded from the big bang singularity it's size was 10^-36 m any idea on that? like how scientists...

I read Where can I read theories on what the universe is expanding into and what gave rise to the big bang?

Hello everybody, I'm doing a little research for an Astrophysics course and I am supposed to talk about some older theories that have been developed to try to explain the beginning of the universe before the big bang theory became widely accepted. Sadly, when I look for them, most of what I...

Hey, so I've been wondering about this question for a while and was wondering if anyone could support the Big Bang theory in this respect or anything else. Just wondering if anyone has an answer that might aid me in understanding this, thanks.

Hello Physicists First time poster. To give you some background I'm an electrical engineer so i have some basic understanding of physics up through relativity/quantum. I had a thought just occur to me that isn't very easy to google an answer for so i thought I'd come to the experts here. my...

Could you please help me by suggesting some books that tell the story of how "stuff" ( I mean the stuff we discuss in physics ) such as origin of matter from a universe with nothing but energy, origins of wave, gravity, electromagnetic forces etc in the course of the evolution of cosmos after...

Hi, In the "Big Rip" scenario, the expansion of spacetime increases exponentially. As a result, it will torn apart galaxies, later the system solar, then the Earth itself, atoms... If the expansion keeps on increasing, at some point would it be strong enough to separate virtual particles...

Hello , so the question is basically like that , I did some thinking about evolution and so I came to this question. Now the universe today with it's proton size and mass and particle charges , gravitational constant and all other things we know and yet don't know about , seems kinda precise...